APA (7th ed.) Citation

(1986). General soil map: State of Oregon. Soil Conservation Service.

Chicago Style (17th ed.) Citation

General Soil Map: State of Oregon. [Portland]: Soil Conservation Service, 1986.

MLA (9th ed.) Citation

General Soil Map: State of Oregon. Soil Conservation Service, 1986.

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