Cita APA (7th ed.)

Knapp, B. (1979). Elements of geographical hydrology. Unwin Hyman.

Cita Chicago (17th ed.)

Knapp, Brian. Elements of Geographical Hydrology. Boston: Unwin Hyman, 1979.

Cita MLA (9th ed.)

Knapp, Brian. Elements of Geographical Hydrology. Unwin Hyman, 1979.