APA استشهاد

Cullen,J. (1992). Orchid book: A guide to the identification of cultivated orchid species. Cambridge University Press.

استشهاد بنمط شيكاغو

Cullen,J. Orchid Book: A Guide to the Identification of Cultivated Orchid Species. United Kingdom: Cambridge University Press, 1992.

MLA استشهاد

Cullen,J. Orchid Book: A Guide to the Identification of Cultivated Orchid Species. Cambridge University Press, 1992.