APA (7th ed.) Citation

(1989). The effect of exhaust system backpressure on HC, CO, and NOx emissions. [U.S. Environmental Protection Agency].

Chicago Style (17th ed.) Citation

The Effect of Exhaust System Backpressure on HC, CO, and NOx Emissions. [Washington, D.C.]: [U.S. Environmental Protection Agency], 1989.

MLA (9th ed.) Citation

The Effect of Exhaust System Backpressure on HC, CO, and NOx Emissions. [U.S. Environmental Protection Agency], 1989.