MLA

Melmed, Schlomo, et al. Williams Textbook of Endocrinology (13th Edition). Elsevier, 2015.

APA

Melmed, S., Kronenberg, H. M, Larsen, P. Reed, & Polonsky, K. S. (2015). Williams Textbook of Endocrinology (13th Edition). Elsevier.

Chicago

Melmed, Schlomo, Henry M Kronenberg, P. Reed Larsen, and Kenneth S Polonsky. Williams Textbook of Endocrinology (13th Edition). : Elsevier, 2015.