APA (7th ed.) Citation

Leighton, M. M., & MacClintock, P. (1930). Weathered zones of the drift-sheets of Illinois.

Chicago Style (17th ed.) Citation

Leighton, Morris M., and Paul MacClintock. Weathered Zones of the Drift-sheets of Illinois. 1930.

MLA (9th ed.) Citation

Leighton, Morris M., and Paul MacClintock. Weathered Zones of the Drift-sheets of Illinois. 1930.

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