Não informado. (1972). Environmental Health Perspectives. National Institute of Environmenatl Health Sciences.
Chicago-Zitierstil (17. Ausg.)Não informado. Environmental Health Perspectives. Research Triangle Park, NC: National Institute of Environmenatl Health Sciences, 1972.
MLA-Zitierstil (8. Ausg.)Não informado. Environmental Health Perspectives. National Institute of Environmenatl Health Sciences, 1972.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.