APA (7th ed.) Citation

Geological Survey (U.S.). (1986). El Dorado, Arkansas - Louisiana: 1:100 000-scale planimetric map 30 x 60 minute series (planimetric). The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). El Dorado, Arkansas - Louisiana: 1:100 000-scale Planimetric Map 30 X 60 Minute Series (planimetric). Reston, Va.: The Survey, 1986.

MLA (8th ed.) Citation

Geological Survey (U.S.). El Dorado, Arkansas - Louisiana: 1:100 000-scale Planimetric Map 30 X 60 Minute Series (planimetric). The Survey, 1986.