Citazione Stile APA (7a Edizione)

Richards, R. A. (2016). Biological classification: A philosophical introduction. Cambridge University Press.

Citazione stile Chigago Style (17a edizione)

Richards, Richard A. Biological Classification: A Philosophical Introduction. Cambridge: Cambridge University Press, 2016.

Citatione MLA (9a ed.)

Richards, Richard A. Biological Classification: A Philosophical Introduction. Cambridge University Press, 2016.