Cita APA (7a ed.)

American Water Works Association, Valentine, M., & Armstrong, C. (2014). Groundwater (Fourth edition.). American Water Works Association.

Cita Chicago Style (17a ed.)

American Water Works Association, Melissa Valentine, y Cheryl Armstrong. Groundwater. Fourth edition. Denver, Colorado: American Water Works Association, 2014.

Cita MLA (9a ed.)

American Water Works Association, et al. Groundwater. Fourth edition. American Water Works Association, 2014.