APA (7th ed.) Citation
Ritchey, J. D., & Rumbaugh, J. O. (1996). Subsurface fluid flow (ground-water and vadose zone) modeling. ASTM.
Chicago Style (17th ed.) Citation
Ritchey, Joseph D., and James O. Rumbaugh. Subsurface Fluid Flow (ground-water and Vadose Zone) Modeling. West Conshohocken, Pa.: ASTM, 1996.
MLA (9th ed.) Citation
Ritchey, Joseph D., and James O. Rumbaugh. Subsurface Fluid Flow (ground-water and Vadose Zone) Modeling. ASTM, 1996.
Warning: These citations may not always be 100% accurate.