APA
Roy Greep, . (1962). Endocrinology. New York: J.B. lippincott Company.
Chicago
Roy Greep, . 1962. Endocrinology. New York: J.B. lippincott Company.
Harvard
Roy Greep, . (1962). Endocrinology. New York: J.B. lippincott Company.
MLA
Roy Greep, . Endocrinology. New York: J.B. lippincott Company. 1962.