Cita APA (7th ed.)

Walton, W. C. (1992). Groundwater modeling utilities. Lewis Publishers.

Cita Chicago (17th ed.)

Walton, William C. Groundwater Modeling Utilities. Boca Raton: Lewis Publishers, 1992.

Cita MLA (9th ed.)

Walton, William C. Groundwater Modeling Utilities. Lewis Publishers, 1992.