Reader's digest Association. (1992). The good health fact book. Reader's digest association.
Chicago-referens (17:e uppl.)Reader's digest Association. The Good Health Fact Book. New York: Reader's digest association, 1992.
MLA-referens (9:e uppl.)Reader's digest Association. The Good Health Fact Book. Reader's digest association, 1992.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.