Cita APA (7th ed.)
Ritchey, J. D., & Rumbaugh, J. O. (1996). Subsurface fluid flow (ground-water and vadose zone) modeling. ASTM.
Cita Chicago (17th ed.)
Ritchey, Joseph D., i James O. Rumbaugh. Subsurface Fluid Flow (ground-water and Vadose Zone) Modeling. West Conshohocken, Pa.: ASTM, 1996.
Cita MLA (9th ed.)
Ritchey, Joseph D., i James O. Rumbaugh. Subsurface Fluid Flow (ground-water and Vadose Zone) Modeling. ASTM, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.