Cita APA (7a ed.)

Roberts, T. (1964). Contraception and holiness: The Catholic predicament. Collins.

Cita Chicago Style (17a ed.)

Roberts, Thomas. Contraception and Holiness: The Catholic Predicament. London: Collins, 1964.

Cita MLA (9a ed.)

Roberts, Thomas. Contraception and Holiness: The Catholic Predicament. Collins, 1964.