Cita APA (7a ed.)

Wallis, J. (1963). THINKING about marriage. Penguin Books, ed.

Cita Chicago Style (17a ed.)

Wallis, J.H. THINKING About Marriage. Baltimore: Penguin Books, ed, 1963.

Cita MLA (9a ed.)

Wallis, J.H. THINKING About Marriage. Penguin Books, ed, 1963.