United States. Public Health Service. (1960). National Institutes of Health (Rev. ed.). U.S. Department of Health, Education, and Welfare, Public Health Service.
Cita Chicago (17th ed.)United States. Public Health Service. National Institutes of Health. Rev. ed. [Washington, D.C.]: U.S. Department of Health, Education, and Welfare, Public Health Service, 1960.
Cita MLA (8th ed.)United States. Public Health Service. National Institutes of Health. Rev. ed. U.S. Department of Health, Education, and Welfare, Public Health Service, 1960.
Atenció: Aquestes cites poden no estar 100% correctes.