Gaya APA

al, H, M, K, E. (2008). Williams Textbook of Endocrinology Ed. 11 (Ed. 11). : Saunders.

Gaya MLA

al, Henry, M., Kronenberg,, Et. "Williams Textbook of Endocrinology Ed. 11". Ed. 11 : Saunders, 2008. Text.