APA (7th ed.) Citation

Mehl, S. W., & Hill, M. C. (2005). MODFLOW-2005, the U.S. Geological Survey modular ground-water model: Documentation of shared node local grid refinement (LGR) and the boundary flow and head (BFH) package. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Mehl, Steffen W., and Mary Catherine Hill. MODFLOW-2005, the U.S. Geological Survey Modular Ground-water Model: Documentation of Shared Node Local Grid Refinement (LGR) and the Boundary Flow and Head (BFH) Package. Denver, Colo.: U.S. Dept. of the Interior, U.S. Geological Survey, 2005.

MLA (9th ed.) Citation

Mehl, Steffen W., and Mary Catherine Hill. MODFLOW-2005, the U.S. Geological Survey Modular Ground-water Model: Documentation of Shared Node Local Grid Refinement (LGR) and the Boundary Flow and Head (BFH) Package. U.S. Dept. of the Interior, U.S. Geological Survey, 2005.