APA (7th ed.) Citation

Geological Survey (U.S.). National Mapping Division & Geological Survey (U.S.). National Mapping Division. (1993). Louisiana: Index to topographic and other map coverage. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). National Mapping Division and Geological Survey (U.S.). National Mapping Division. Louisiana: Index to Topographic and Other Map Coverage. Reston, Va.: The Survey, 1993.

MLA (9th ed.) Citation

Geological Survey (U.S.). National Mapping Division and Geological Survey (U.S.). National Mapping Division. Louisiana: Index to Topographic and Other Map Coverage. The Survey, 1993.