APA (7th ed.) Citation

Ffrench, R., O'Neill, J. P., & Eckelberry, D. R. (1976). A guide to the birds of Trinidad and Tobago (Rev. ed.). Harrowood Books.

Chicago Style (17th ed.) Citation

Ffrench, Richard, John P. O'Neill, and Don R. Eckelberry. A Guide to the Birds of Trinidad and Tobago. Rev. ed. Valley Forge, Pa.: Harrowood Books, 1976.

MLA (9th ed.) Citation

Ffrench, Richard, et al. A Guide to the Birds of Trinidad and Tobago. Rev. ed. Harrowood Books, 1976.