APA (7th ed.) Citation

Pratt, W. E. (1950). World geography of petroleum. Princeton Univ. Press.

Chicago Style (17th ed.) Citation

Pratt, Wallace E. World Geography of Petroleum. Princeton: Princeton Univ. Press, 1950.

MLA (9th ed.) Citation

Pratt, Wallace E. World Geography of Petroleum. Princeton Univ. Press, 1950.

Warning: These citations may not always be 100% accurate.