APA (7th ed.) Citation

Hobson, G. D., & Tiratsoo, E. N. (1981). Introduction to petroleum geology (2nd ed.). Scientific Press.

Chicago Style (17th ed.) Citation

Hobson, George Douglas, and E. N. Tiratsoo. Introduction to Petroleum Geology. 2nd ed. England: Scientific Press, 1981.

MLA (9th ed.) Citation

Hobson, George Douglas, and E. N. Tiratsoo. Introduction to Petroleum Geology. 2nd ed. Scientific Press, 1981.