APA-referens

Ward, R. C., & Robinson, M. (2000). Principles of hydrology (Ed.4.). McGraw-Hill.

Chicago-stil citat

Ward, R C., och M. Robinson. Principles of Hydrology. Ed.4. London: McGraw-Hill, 2000.

MLA-referens

Ward, R C., och M. Robinson. Principles of Hydrology. Ed.4. McGraw-Hill, 2000.