Dyfyniad APA

Zaba, J., & Doherty, W. T. (1970). Practical petroleum engineers' handbook. Gulf publishing company.

Dyfyniad Arddull Chicago

Zaba, Joseph, and Wilfred Thomas Doherty. Practical Petroleum Engineers' Handbook. Houston, Tex.: Gulf publishing company, 1970.

Dyfyniad MLA

Zaba, Joseph, and Wilfred Thomas Doherty. Practical Petroleum Engineers' Handbook. Gulf publishing company, 1970.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.