Gaya APA

Katz, D, L., lee, R, L. (1990). Natural Gas Engineering Production And Storage (Ed. 1). : McGraw-Hil Companies,Inc..

Gaya MLA

Katz, Donald, L.., lee, Robert, L.. "Natural Gas Engineering Production And Storage". Ed. 1 : McGraw-Hil Companies,Inc., 1990. Text.