Cita APA (7th ed.)

Hansen, V. E. (1980). Irrigation principles and practices (4th ed.). John Wiley & Sons.

Cita Chicago (17th ed.)

Hansen, Vaughn E. Irrigation Principles and Practices. 4th ed. N.Y: John Wiley & Sons, 1980.

Cita MLA (9th ed.)

Hansen, Vaughn E. Irrigation Principles and Practices. 4th ed. John Wiley & Sons, 1980.