APA (7th ed.) Citation

Harper Collins, Dawson, I., & Singer, D. (1996). Garden birds of Britain and Europe. Harper Collins.

Chicago Style (17th ed.) Citation

Harper Collins, Ian Dawson, and Detlef Singer. Garden Birds of Britain and Europe. London: Harper Collins, 1996.

MLA (8th ed.) Citation

Harper Collins, et al. Garden Birds of Britain and Europe. Harper Collins, 1996.