APA (7th ed.) Citation

Kohl, A. L., & Nielsen, R. (1997). Gas purification (5th ed.). Gulf Pub.

Chicago Style (17th ed.) Citation

Kohl, Arthur L., and Richard Nielsen. Gas Purification. 5th ed. Houston, Tex: Gulf Pub, 1997.

MLA (8th ed.) Citation

Kohl, Arthur L., and Richard Nielsen. Gas Purification. 5th ed. Gulf Pub, 1997.