Παραπομπή APA

GM Urquhart, J Armour, & J.L Duncan. (1988). Veterinary Parasitology. England.

Παραπομπή Chicago Style

GM Urquhart, J Armour, και J.L Duncan. Veterinary Parasitology. England, 1988.

Παραπομπή MLA

GM Urquhart, et al. Veterinary Parasitology. England, 1988.