APA (7th ed.) Citation

Ver Wiebe, W. A. (1949). Oil fields in North America. [publisher not identified].

Chicago Style (17th ed.) Citation

Ver Wiebe, W. A. Oil Fields in North America. Wichita, Kan.: [publisher not identified], 1949.

MLA (9th ed.) Citation

Ver Wiebe, W. A. Oil Fields in North America. [publisher not identified], 1949.

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