APA (7th ed.) Citation

Johnstone, D., & Cross, W. P. (1949). Elements of applied hydrology. Ronald.

Chicago Style (17th ed.) Citation

Johnstone, Don, and William P. Cross. Elements of Applied Hydrology. New York: Ronald, 1949.

MLA (9th ed.) Citation

Johnstone, Don, and William P. Cross. Elements of Applied Hydrology. Ronald, 1949.