APA (7th ed.) Citation
Parkin, D. T., & Knox, A. G. (2010). The status of birds in Britain and Ireland. Christopher Helm.
Chicago Style (17th ed.) Citation
Parkin, David T., and A. G. Knox. The Status of Birds in Britain and Ireland. London: Christopher Helm, 2010.
MLA (9th ed.) Citation
Parkin, David T., and A. G. Knox. The Status of Birds in Britain and Ireland. Christopher Helm, 2010.
Warning: These citations may not always be 100% accurate.