Cita APA (7a ed.)

Bernal, J. D., & Synge, A. (1972). The origin of life: Specimen. University Press.

Cita Chicago Style (17a ed.)

Bernal, John Desmond, y Ann Synge. The Origin of Life: Specimen. Oxford: University Press, 1972.

Cita MLA (9a ed.)

Bernal, John Desmond, y Ann Synge. The Origin of Life: Specimen. University Press, 1972.