APA (7th ed.) Citation

Geological Survey. (1987). Index to national aerial photography program (NAPP). Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey. Index to National Aerial Photography Program (NAPP). Reston, Va.: Dept. of the Interior, U.S. Geological Survey, 1987.

MLA (8th ed.) Citation

Geological Survey. Index to National Aerial Photography Program (NAPP). Dept. of the Interior, U.S. Geological Survey, 1987.

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