Citazione Stile APA (7a Edizione)

Hutchinson, J. (1967). Key to the families of flowering plants of the world. Clarendon Press.

Citazione stile Chigago Style (17a edizione)

Hutchinson, J. Key to the Families of Flowering Plants of the World. London, United Kingdom: Clarendon Press, 1967.

Citatione MLA (9a ed.)

Hutchinson, J. Key to the Families of Flowering Plants of the World. Clarendon Press, 1967.