APA-referens

Hoyo, J. d., Elliott, A., & sargatal, j. (1992). Handbook of the birds of the world: Volume 1 Ostrich to Ducks. Lynx Edicions.

Chicago-stil citat

Hoyo, Josep del, Andrew Elliott, och jordi sargatal. Handbook of the Birds of the World: Volume 1 Ostrich to Ducks. Barcelona: Lynx Edicions, 1992.

MLA-referens

Hoyo, Josep del, et al. Handbook of the Birds of the World: Volume 1 Ostrich to Ducks. Lynx Edicions, 1992.