APA (7th ed.) Citation

Jensen, J. V., & Kirkeby, J. (1980). The birds of Gambia: An annot. check-list and guide to localities in the Gambia.

Chicago Style (17th ed.) Citation

Jensen, Jørn V., and Jens Kirkeby. The Birds of Gambia: An Annot. Check-list and Guide to Localities in the Gambia. Arhus, 1980.

MLA (9th ed.) Citation

Jensen, Jørn V., and Jens Kirkeby. The Birds of Gambia: An Annot. Check-list and Guide to Localities in the Gambia. 1980.