Cita APA (7th ed.)
Parkin, D. T., & Knox, A. G. (2010). The status of birds in Britain and Ireland. Christopher Helm.
Cita Chicago (17th ed.)
Parkin, David T., i A. G. Knox. The Status of Birds in Britain and Ireland. London: Christopher Helm, 2010.
Cita MLA (9th ed.)
Parkin, David T., i A. G. Knox. The Status of Birds in Britain and Ireland. Christopher Helm, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.