Cita APA (7a ed.)

Bittles, A. H., & Collins, K. J. (1986). The biology of human ageing. Cambridge University Press.

Cita Chicago Style (17a ed.)

Bittles, A. H., y K. J. Collins. The Biology of Human Ageing. Cambridge [etc.]: Cambridge University Press, 1986.

Cita MLA (9a ed.)

Bittles, A. H., y K. J. Collins. The Biology of Human Ageing. Cambridge University Press, 1986.