Não informado. (1971). American Journal of Public Health. American Public Health Association.
Chicago-Zitierstil (17. Ausg.)Não informado. American Journal of Public Health. Washington: American Public Health Association, 1971.
MLA-Zitierstil (8. Ausg.)Não informado. American Journal of Public Health. American Public Health Association, 1971.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.