APA (7th ed.) Citation

Geological Survey (U.S.) & Water Resources Council (U.S.). (1974). Hydrologic unit map--1974, State of West Virginia. [publisher not identified].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and Water Resources Council (U.S.). Hydrologic Unit Map--1974, State of West Virginia. Reston, Va.: [publisher not identified], 1974.

MLA (9th ed.) Citation

Geological Survey (U.S.) and Water Resources Council (U.S.). Hydrologic Unit Map--1974, State of West Virginia. [publisher not identified], 1974.