Cullen,J. (1992). Orchid book: A guide to the identification of cultivated orchid species. Cambridge University Press.
Čikaški stil citiranjaCullen,J. Orchid Book: A Guide to the Identification of Cultivated Orchid Species. United Kingdom: Cambridge University Press, 1992.
MLA način citiranjaCullen,J. Orchid Book: A Guide to the Identification of Cultivated Orchid Species. Cambridge University Press, 1992.
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