Teks kutipan

• Ian Ridpath dan Wil Tirion (2007). Stars and Planets Guide, Collins, London ISBN 978-0-00-725120-9. Akhbar Universiti Princeton, Princeton. ISBN 978-0-691-13556-4.
• Schlegel, Gustaaf (1967) [1875]. Uranographie Chinoise (dalam bahasa Perancis). Taipei, Republik China: Ch'eng Wen Publishing Company.
• Wagman, Morton (2003). Lost Stars: Lost, Missing and Troublesome Stars from the Catalogues of Johannes Bayer, Nicholas Louis de Lacaille, John Flamsteed, and Sundry Others. Blacksburg, Virginia, Amerika Syarikat: The McDonald & Woodward Publishing Company. ISBN 978-0-939923-78-6.