APA (7th ed.) Citation

Geological Survey (U.S.). (1987). Digital line graphs from 1: 24,000-scale maps. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Digital Line Graphs from 1: 24,000-scale Maps. Reston, Va.: U.S. Dept. of the Interior, U.S. Geological Survey, 1987.

MLA (9th ed.) Citation

Geological Survey (U.S.). Digital Line Graphs from 1: 24,000-scale Maps. U.S. Dept. of the Interior, U.S. Geological Survey, 1987.