Cita APA (7a ed.)

Huxley, J., Kettlewell, H. B. D., & Fernandez Zulaica, J. (1985). Darwin. Salvat.

Cita Chicago Style (17a ed.)

Huxley, Julian, H B D. Kettlewell, y Jesus Fernandez Zulaica. Darwin. Barcelona: Salvat, 1985.

Cita MLA (8a ed.)

Huxley, Julian, et al. Darwin. Salvat, 1985.