APA (7th ed.) Citation

Bridges, E. M., & Davidson, D. A. (1982). Principles and applications of soil geography. Longman.

Chicago Style (17th ed.) Citation

Bridges, E. M., and Donald A. Davidson. Principles and Applications of Soil Geography. London ; New York: Longman, 1982.

MLA (9th ed.) Citation

Bridges, E. M., and Donald A. Davidson. Principles and Applications of Soil Geography. Longman, 1982.