Peel, J., & Potts, M. (1969). Textbook of contraceptive practice. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Peel, John, agus Malcolm Potts. Textbook of Contraceptive Practice. London: Cambridge University Press, 1969.
Lua MLA (9ú heag.)Peel, John, agus Malcolm Potts. Textbook of Contraceptive Practice. Cambridge University Press, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.