APA (7th ed.) Citation

Peterson, R. T., Mountfort, G., & Hollom, P. A. D. (1993). Collins field guide to birds of Britain and Europe (5th ed., rev. and enl.). Harper Collins Publishers.

Chicago Style (17th ed.) Citation

Peterson, Roger Tory, Guy Mountfort, and P. A. D. Hollom. Collins Field Guide to Birds of Britain and Europe. 5th ed., rev. and enl. London: Harper Collins Publishers, 1993.

MLA (9th ed.) Citation

Peterson, Roger Tory, et al. Collins Field Guide to Birds of Britain and Europe. 5th ed., rev. and enl. Harper Collins Publishers, 1993.