APA (7th ed.) Citation

Walker, H. J., & Grabau, W. (1993). The Evolution of geomorphology: A nation-by-nation summary of development. Wiley & Sons.

Chicago Style (17th ed.) Citation

Walker, H. J., and Warren Grabau. The Evolution of Geomorphology: A Nation-by-nation Summary of Development. Chichester ; New York: Wiley & Sons, 1993.

MLA (9th ed.) Citation

Walker, H. J., and Warren Grabau. The Evolution of Geomorphology: A Nation-by-nation Summary of Development. Wiley & Sons, 1993.