Petikan Paus_Callistus_I

  1. ↑ The Editors of Encyclopædia Britannica. "Saint Calixtus I". Encyclopædia Britannica. Dicapai pada 14 August 2016.
  2. ↑ Jones, Tery M. "Pope Saint Callistus I". Saints.SQPN.com. Star Quest Publication Network. Dicapai pada 14 October 2010.
  3. 1 2 3 Chapman, John (1908).
  4. 1 2 3 4 5 6 7 Fr. Paolo O. Pirlo, SHMI (1997). "St. Callistus I". My First Book of Saints. Sons of Holy Mary Immaculate - Quality Catholic Publications. m/s. 240. ISBN 978-971-91595-4-4.
  5. ↑ Philosophoumena IX.7
  6. ↑ Pagels, Elaine (1979). The Gnostic Gospels. Weidenfeld & Nicolson. m/s. 108.
  7. ↑ Hippolytus. Refutation of all heresies. Book 9 Ch. 7.
  8. ↑ "Saint Hippolytus of Rome". Encyclopædia Britannica.
  9. 1 2 Sabine Baring-Gould, The Lives of the Saints.
  10. ↑ Matilda Webb (2001). The Churches and Catacombs of Early Christian Rome: A Comprehensive Guide. Sussex Academic Press. m/s. 229–. ISBN 978-1-902210-57-5.