APA (7th ed.) Citation

Sasscer, R. S., & Sasscer, R. S. (2000). U.S. Geological Survey Library classification system (Revised, June 2000.). U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Sasscer, R. Scott, and R. Scott Sasscer. U.S. Geological Survey Library Classification System. Revised, June 2000. Eastern Region, Reston, Va.: U.S. Department of the Interior, U.S. Geological Survey, 2000.

MLA (9th ed.) Citation

Sasscer, R. Scott, and R. Scott Sasscer. U.S. Geological Survey Library Classification System. Revised, June 2000. U.S. Department of the Interior, U.S. Geological Survey, 2000.