APA (7th ed.) Citation

Smith, J. E. (1991). Humanae vitae, a generation later. Catholic University of America Press.

Chicago Style (17th ed.) Citation

Smith, Janet E. Humanae Vitae, a Generation Later. Washington, D.C: Catholic University of America Press, 1991.

MLA (9th ed.) Citation

Smith, Janet E. Humanae Vitae, a Generation Later. Catholic University of America Press, 1991.