APA استشهاد

Hobbs, B. C., & Roberts, D. Food poisoning and food hygiene (6th ed.). Edward Arnold.

استشهاد بنمط شيكاغو

Hobbs, Betty C., و Diane Roberts. Food Poisoning and Food Hygiene. 6th ed. London: Edward Arnold.

MLA استشهاد

Hobbs, Betty C., و Diane Roberts. Food Poisoning and Food Hygiene. 6th ed. Edward Arnold.