APA-viite

Barger et al, B S POMEROY, E H Barger, & L E CARD. (1953). Diseases and parasites of poultry. Culcutta.

Chicago-tyylinen lähdeviittaus

Barger et al, B S POMEROY, E H Barger, ja L E CARD. Diseases and Parasites of Poultry. Culcutta, 1953.

MLA-viite

Barger et al, et al. Diseases and Parasites of Poultry. Culcutta, 1953.