Cita APA

Gensbol, B., Bertel, B., Mead, C. J., & Vevers, G. (1992). Collins photo guide to the birds of prey of Britain and Europe, North Africa and the Middle East. Londres: Harper Collins.

Citación estilo Chicago

Gensbol, Benny, Bjarne Bertel, C. J. Mead, y Gwynne Vevers. Collins Photo Guide to the Birds of Prey of Britain and Europe, North Africa and the Middle East. Londres: Harper Collins, 1992.

Cita MLA

Gensbol, Benny, Bjarne Bertel, C. J. Mead, y Gwynne Vevers. Collins Photo Guide to the Birds of Prey of Britain and Europe, North Africa and the Middle East. Londres: Harper Collins, 1992.