Cita APA (7a ed.)

Cramp, S., & Perrins, C. (1994). Handbook of the birds of Europe, the Middle East and North Africa. The birds of the Western Paleartic: 9, Buntings and new world warblers. Oxford University Press.

Cita Chicago Style (17a ed.)

Cramp, Stanley, y C.M Perrins. Handbook of the Birds of Europe, the Middle East and North Africa. The Birds of the Western Paleartic: 9, Buntings and New World Warblers. Oxford [etc.]: Oxford University Press, 1994.

Cita MLA (9a ed.)

Cramp, Stanley, y C.M Perrins. Handbook of the Birds of Europe, the Middle East and North Africa. The Birds of the Western Paleartic: 9, Buntings and New World Warblers. Oxford University Press, 1994.