Cita APA (7a ed.)

O'Connor, E., Yapp, M., & Killingray, M. (1977). Darwin (1. publ.). Harrap.

Cita Chicago Style (17a ed.)

O'Connor, Edmund, Malcolm Yapp, y Margaret Killingray. Darwin. 1. publ. London: Harrap, 1977.

Cita MLA (9a ed.)

O'Connor, Edmund, et al. Darwin. 1. publ. Harrap, 1977.