Cita APA

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

Citación estilo Chicago

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

Cita MLA

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