Citazione APA

Hutchinson, J. (1967). Key to the families of flowering plants of the world (Revised and enlarged for use as a supplement to The genera of flowering plants.). Clarendon P..

Stile di citazione Chicago

Hutchinson, J. Key to the Families of Flowering Plants of the World. Revised and enlarged for use as a supplement to The genera of flowering plants. Oxford: Clarendon P., 1967.

Citazione MLA

Hutchinson, J. Key to the Families of Flowering Plants of the World. Revised and enlarged for use as a supplement to The genera of flowering plants. Clarendon P., 1967.