Cita APA (7a ed.)

(1974). Monitoring and Air Quality Trends Report, 1973. U. S. Environmental Protection Agency.

Cita Chicago Style (17a ed.)

Monitoring and Air Quality Trends Report, 1973. North Carolina: U. S. Environmental Protection Agency, 1974.

Cita MLA (9a ed.)

Monitoring and Air Quality Trends Report, 1973. U. S. Environmental Protection Agency, 1974.