APA (7th ed.) Citation

Geological Survey. (1976). Hydrologic unit map--1974, State of Alaska.

Chicago Style (17th ed.) Citation

Geological Survey. Hydrologic Unit Map--1974, State of Alaska. Reston, Va, 1976.

MLA (8th ed.) Citation

Geological Survey. Hydrologic Unit Map--1974, State of Alaska. 1976.

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