APA
American Petroleum Institute A., . (2004). Packaged, integrally geared centrifugal air compressors for petroleum, chemical, and gas industry services. Washington: American Petroleum Institute, API.
Chicago
American Petroleum Institute API, . 2004. Packaged, integrally geared centrifugal air compressors for petroleum, chemical, and gas industry services. Washington: American Petroleum Institute, API.
Harvard
American Petroleum Institute A., . (2004). Packaged, integrally geared centrifugal air compressors for petroleum, chemical, and gas industry services. Washington: American Petroleum Institute, API.
MLA
American Petroleum Institute API, . Packaged, integrally geared centrifugal air compressors for petroleum, chemical, and gas industry services. Washington: American Petroleum Institute, API. 2004.