• Bavoux, GA (1996). Le porteur de lumière [The bearer of light] (dalam bahasa Perancis). Paris: Pygmalion.
• Browne-Olf, Lillian. Their Name Is Pius (1941) pp 235–304 online
• Chadwick, Owen. A History of the Popes 1830-1914 (2003). online pp 332–405.
• Chiron, Yves (2002). Pope Saint Pius X: Restorer of The Church. Kansas City, MO: Angelus. ISBN 978-1-892331-10-6.
• Cornwell, John (2008). Hitler's Pope: The Secret History of Pius XII. Penguin. ISBN 978-0-14311400-0.
• F. A. Forbes (1954) [Burns Oates & Washbourne 1918]. Pope St. Pius X. London: TAN.
• Kühner, Hans (1960). Lexikon der Päpste [Dictionary of Popes] (dalam bahasa Jerman). Frankfurt: Fischer.
• Lortz, Joseph (1934). Geschichte der Kirche (dalam bahasa Jerman). Munster.
• Noel, Gerard (13 December 2009). Pius XII: The Hound of Hitler (Hardcover). Bloomsbury. ISBN 978-1-84706355-7.
• Renz, Christopher J (2009). In This Light Which Gives Light: A History of the College of St. Albert the Great (1930–1980). Dominican School. ISBN 978-1-88373418-3.
• Regoli, Roberto (2009). "L'elite cardinalizia dopo la fine dello stato pontificio". Archivum Historiae Pontificiae (dalam bahasa Itali). 47: 63–87. JSTOR 23565185.
• Regoli, Roberto, penyunting (2016). San Pio X. Papa riformatore di fronte alle sfide del nuovo secolo. Vatican City: Libreria Editrice Vaticana. ISBN 9788820997823.
• Smit, JO; dal Gal, G (1951). Beato Pio X. Amsterdam: N.V. Drukkerij De Tijd.
• van der Veldt, J. H. (1965). St. Pius X Pope. Boston, MA: Daughters of St. Paul.
• Cardinal Rafael Merry del Val (1920). Pope Pius X. Rome: Vatican.
• Catechismo della dottrina Cristiana, Pubblicato per Ordine del Sommo Pontifice San Pio X [Catecism of the Christian doctrine, published by order of the High priest Saint Pius X] (dalam bahasa Itali). Il Sabato. 1999.

Dalam hidupnya

• Á Czaich; A. Fráter (1907). X. Pius pápa. Életének és uralkodásának története napjainkig. Budapest: Az Athenaeum.
• Monsignor Hartwell de la Garde Grissell (1903). Sede Vacante: Being a Diary Written During the Conclave of 1903. Oxford: James Parke & Co.
• Sarto, Giuseppe Melchiorre (2 February 1904). "Ad diem illum". Vatican Publishing House. 5.
• ——— (1905). Catechism (PDF). Catholic Primer. Diarkibkan daripada yang asal (PDF) pada 26 May 2013. Dicapai pada 23 June 2008.
• ——— (15 April 1905a). "Acerbo Nimis". Vatican Publishing House. Dicapai pada 23 June 2013.
• ——— (1907-07-03). "Lamentabili Sane". Papal encyclicals. Dicapai pada 2013-06-23.
• Schmidlin, Edward; de Waal, Anton (1904). Life of His Holiness, Pope Pius X. Benziger Brothers. Dicapai pada 17 November 2017. (this was an apologetic work intended for American audiences, where criticism of 'popery' was very common in society, and it contained a preface by James Cardinal Gibbons).
• Monsignor E. Canon Schmitz (1907). Life of Pius X. New York: The American Catholic Publication Society.
• Monsignor Anton de Waal (1904). Life of Pope Pius X. trans. Joseph William Berg. Milwaukee: The M.H. Wiltzius Co.

Selepas kematiannya

• F. A. Forbes (1924) [1918]. Life of Pius X (ed. 2nd). New York: PJ Kenedy & Sons. Merry del Val (above) considered this work to be the most authoritative written on him.
• René Bazin (1928). Pius X. St Louis: B Herder.
• Burton, Katherine (1950). The Great Mantle: The Life of Giuseppe Sarto. Longmens.
• Thornton, Father Francis Beauchesne (1952). The Burning Flame: The Life of Pius X. Benziger Brothers. This priest was the editor for Burton's book.
• Martini, Teri (1954). The Fisherman's Ring: The Life of Giuseppe Sarto, The Children's Pope. St Anthony Guild Press.