Citazione APA

Grimmett,Richard, Inskipp,Carol, & Inskipp,Tim. (2006). Pocket guide to the birds of the indian subcontinent. Chriistopher Helm.

Stile di citazione Chicago

Grimmett,Richard, Inskipp,Carol, e Inskipp,Tim. Pocket Guide to the Birds of the Indian Subcontinent. London: Chriistopher Helm, 2006.

Citazione MLA

Grimmett,Richard, et al. Pocket Guide to the Birds of the Indian Subcontinent. Chriistopher Helm, 2006.