Não informado. (1968). Health aspects of pesticides. U.S. Public Health Service, Pesticides Program.
Chicago-referens (17:e uppl.)Não informado. Health Aspects of Pesticides. Atlanta, Ga: U.S. Public Health Service, Pesticides Program, 1968.
MLA-referens (8:e uppl.)Não informado. Health Aspects of Pesticides. U.S. Public Health Service, Pesticides Program, 1968.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.