APA (7th ed.) Citation

Peterson, R. T., Mountfort, G., & Hollom, P. A. D. (1966). A field guide to the birds of Britain and Europe (2d ed., rev. and enl.). Houghton Mifflin.

Chicago Style (17th ed.) Citation

Peterson, Roger Tory, Guy Mountfort, and P. A. D. Hollom. A Field Guide to the Birds of Britain and Europe. 2d ed., rev. and enl. Boston: Houghton Mifflin, 1966.

MLA (9th ed.) Citation

Peterson, Roger Tory, et al. A Field Guide to the Birds of Britain and Europe. 2d ed., rev. and enl. Houghton Mifflin, 1966.