APA (7th ed.) Citation

Henry, G. M. (1978). A guide to the birds of Ceylon (2. ed.). Oxford Univ. Press.

Chicago Style (17th ed.) Citation

Henry, G. M. A Guide to the Birds of Ceylon. 2. ed. London [u.a.]: Oxford Univ. Press, 1978.

MLA (9th ed.) Citation

Henry, G. M. A Guide to the Birds of Ceylon. 2. ed. Oxford Univ. Press, 1978.