Cita APA (7th ed.)

Kohl, A. L., & Riesenfeld, F. C. (1985). Gas purification (4a. ed.). Gulf.

Cita Chicago (17th ed.)

Kohl, Arthur L., i Fred C. Riesenfeld. Gas Purification. 4a. ed. Houston: Gulf, 1985.

Cita MLA (9th ed.)

Kohl, Arthur L., i Fred C. Riesenfeld. Gas Purification. 4a. ed. Gulf, 1985.