APA (7th ed.) Citation

Geological Survey (U.S.). (1950). Spokane quadrangle, Washington--Spokane Co: 15 minute series (topographic). The Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Spokane Quadrangle, Washington--Spokane Co: 15 Minute Series (topographic). Denver, Colo.: The Geological Survey, 1950.

MLA (8th ed.) Citation

Geological Survey (U.S.). Spokane Quadrangle, Washington--Spokane Co: 15 Minute Series (topographic). The Geological Survey, 1950.

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