APA (7th ed.) Citation

Geological Survey (U.S.), Williams, H., & Bacon, C. R. (1988). Crater Lake National Park and vicinity, Oregon, 1: 62 500-scale topographic map, 1988. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Howel Williams, and Charles R. Bacon. Crater Lake National Park and Vicinity, Oregon, 1: 62 500-scale Topographic Map, 1988. Reston, Va.: The Survey, 1988.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Crater Lake National Park and Vicinity, Oregon, 1: 62 500-scale Topographic Map, 1988. The Survey, 1988.