APA (7th ed.) Citation

Voice of America (Radio Program) & Park, C. F. (1973). Earth resources. United States Information Agency.

Chicago Style (17th ed.) Citation

Voice of America (Radio Program) and Charles F. Park. Earth Resources. Washington, D.C: United States Information Agency, 1973.

MLA (9th ed.) Citation

Voice of America (Radio Program) and Charles F. Park. Earth Resources. United States Information Agency, 1973.