APA (7th ed.) Citation

United States. Division of Emergency Health Services. (1972). Emergency medical services communications systems. U.S. Dept. of Health, Education, and Welfare, Health Services and Mental Health Administration, Division of Emergency Health Services.

Chicago Style (17th ed.) Citation

United States. Division of Emergency Health Services. Emergency Medical Services Communications Systems. Rockville, Md.: U.S. Dept. of Health, Education, and Welfare, Health Services and Mental Health Administration, Division of Emergency Health Services, 1972.

MLA (8th ed.) Citation

United States. Division of Emergency Health Services. Emergency Medical Services Communications Systems. U.S. Dept. of Health, Education, and Welfare, Health Services and Mental Health Administration, Division of Emergency Health Services, 1972.