APA

Williams R. H., Albert A., Blizzard R. M., Brasel A. & Daughaday W. H. (1968). Textbook of endocrinology. Philadelphia: W. B. Saunders company.

Chicago

Williams R H, Albert A, Blizzard R M, Brasel A and Daughaday W H. 1968. Textbook of endocrinology. Philadelphia: W. B. Saunders company.

Harvard

Williams R. H., Albert A., Blizzard R. M., Brasel A. and Daughaday W. H. (1968). Textbook of endocrinology. Philadelphia: W. B. Saunders company.

MLA

Williams R H, Albert A, Blizzard R M, Brasel A and Daughaday W H. Textbook of endocrinology. Philadelphia: W. B. Saunders company. 1968.