APA (7th ed.) Citation

(1997). Proposed phase 2 standards for small spark-ignition engines. United States Environmental Protection Agency, Air and Radiation, Office of Mobile Sources.

Chicago Style (17th ed.) Citation

Proposed Phase 2 Standards for Small Spark-ignition Engines. [Washington, D.C.]: United States Environmental Protection Agency, Air and Radiation, Office of Mobile Sources, 1997.

MLA (9th ed.) Citation

Proposed Phase 2 Standards for Small Spark-ignition Engines. United States Environmental Protection Agency, Air and Radiation, Office of Mobile Sources, 1997.