Citazione Stile APA (7a Edizione)

Reader's digest Association. (1992). The good health fact book. Reader's digest association.

Citazione stile Chigago Style (17a edizione)

Reader's digest Association. The Good Health Fact Book. New York: Reader's digest association, 1992.

Citatione MLA (9a ed.)

Reader's digest Association. The Good Health Fact Book. Reader's digest association, 1992.