APA (7th ed.) Citation

George, H. (1978). Soils in Northumberland I.1) / by H. George. Soil Survey.

Chicago Style (17th ed.) Citation

George, H. Soils in Northumberland I.1) / by H. George. Soil Survey, 1978.

MLA (9th ed.) Citation

George, H. Soils in Northumberland I.1) / by H. George. Soil Survey, 1978.

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