Hafez, E. S. E., & Evans, T. N. (1973). Human reproduction: Conception and contraception. Harper & Row.
Lua i Stíl Chicago (17ú heag.)Hafez, E. S. E., agus Tommy Nicholas Evans. Human Reproduction: Conception and Contraception. Hagerstown, MD: Harper & Row, 1973.
Lua MLA (9ú heag.)Hafez, E. S. E., agus Tommy Nicholas Evans. Human Reproduction: Conception and Contraception. Harper & Row, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.