Heywood, V. H. (1968). Modern methods in plant taxonomy. Botanical Society of the British Isles and the Linnean Society of London by Academic Press.
Chicago Style (17. basım) AtıfHeywood, Vernon Hilton. Modern Methods in Plant Taxonomy. London: Botanical Society of the British Isles and the Linnean Society of London by Academic Press, 1968.
MLA (9th ed.) AtıfHeywood, Vernon Hilton. Modern Methods in Plant Taxonomy. Botanical Society of the British Isles and the Linnean Society of London by Academic Press, 1968.
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