APA (7th ed.) Citation

Johnson, D. (2002). Crusty's little book on biological soil crust. [U.S. Dept. of the Interior, Geological Survey].

Chicago Style (17th ed.) Citation

Johnson, Doug. Crusty's Little Book on Biological Soil Crust. [Reston, Va.]: [U.S. Dept. of the Interior, Geological Survey], 2002.

MLA (9th ed.) Citation

Johnson, Doug. Crusty's Little Book on Biological Soil Crust. [U.S. Dept. of the Interior, Geological Survey], 2002.