Não informado. (1841). Proceedings of the Academy of Natural Sciences of Philadelphia. Academy of Natural Sciences of Philadelphia.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Proceedings of the Academy of Natural Sciences of Philadelphia. Philadelphia, Pa: Academy of Natural Sciences of Philadelphia, 1841.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Proceedings of the Academy of Natural Sciences of Philadelphia. Academy of Natural Sciences of Philadelphia, 1841.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.