Hutchinson, J. (1967). Key to the families of flowering plants of the world. Clarendon Press.
Chicago-viite (17. p.)Hutchinson, J. Key to the Families of Flowering Plants of the World. Oxford: Clarendon Press, 1967.
MLA-viite (9. p.)Hutchinson, J. Key to the Families of Flowering Plants of the World. Clarendon Press, 1967.
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