APA Citation

Pratt, W. E. (1950). World geography of petroleum. [S.l.]: Princenton University Press.

Chicago Style Citation

Pratt, Wallace E. World Geography of Petroleum. [S.l.]: Princenton University Press, 1950.

MLA Citation

Pratt, Wallace E. World Geography of Petroleum. [S.l.]: Princenton University Press, 1950.

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