APA (7th ed.) Citation

Zack, A. L. (1988). A well system to recover usable water from a freshwater-saltwater aquifer in Puerto Rico. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Zack, Allen L. A Well System to Recover Usable Water from a Freshwater-saltwater Aquifer in Puerto Rico. Washington: Dept. of the Interior, U.S. Geological Survey, 1988.

MLA (9th ed.) Citation

Zack, Allen L. A Well System to Recover Usable Water from a Freshwater-saltwater Aquifer in Puerto Rico. Dept. of the Interior, U.S. Geological Survey, 1988.