Não informado. (1958). International journal of health education. International Union for Health Education.
Chicago-referens (17:e uppl.)Não informado. International Journal of Health Education. Geneva, Suíça: International Union for Health Education, 1958.
MLA-referens (8:e uppl.)Não informado. International Journal of Health Education. International Union for Health Education, 1958.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.