Cita APA (7a ed.)

Barends, F. B. J. (1980). Nonlinearity in groundwater flow. Delft Soil Mechanics Laboratory.

Cita Chicago Style (17a ed.)

Barends, F. B. J. Nonlinearity in Groundwater Flow. Delft: Delft Soil Mechanics Laboratory, 1980.

Cita MLA (8a ed.)

Barends, F. B. J. Nonlinearity in Groundwater Flow. Delft Soil Mechanics Laboratory, 1980.