Williams, R. (1955). Textbook of Endocrinology.
Lua i Stíl Chicago (17ú heag.)Williams, Robert. Textbook of Endocrinology. 1955.
Lua MLA (9ú heag.)Williams, Robert. Textbook of Endocrinology. 1955.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.