Gaya APA

Campbell, J, M. (1981). Gas conditioning and processing. Volume II Absorption & fractination, pumping, compression & expansion, refrigeration (1981). : Oklohama : Campbell Petroleum Series,.

Gaya MLA

Campbell, John, M. "Gas conditioning and processing. Volume II Absorption & fractination, pumping, compression & expansion, refrigeration". 1981 : Oklohama : Campbell Petroleum Series,, 1981. Text.