Gaya APA
Sholikhah, I, M. et al (1988).
Gas Conditioning And Processing: Volume 2 (6th Ed.).
Oklahoma:
Campbell Petroleum Series.
Gaya MLA
Sholikhah, Ika, Maratus. et al.
"Gas Conditioning And Processing: Volume 2".
6th Ed.
Oklahoma:
Campbell Petroleum Series,
1988.
Text.