APA (7th ed.) Citation

Geological Survey (U.S.) & Olive, W. W. (1989). Swelling clays map of the conterminous United States. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and Wilds W. Olive. Swelling Clays Map of the Conterminous United States. Reston, Va.: The Survey, 1989.

MLA (9th ed.) Citation

Geological Survey (U.S.) and Wilds W. Olive. Swelling Clays Map of the Conterminous United States. The Survey, 1989.

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