APA (7th ed.) Citation

Boettcher, A. J., & Wilke, K. R. Ground-water resources in the Libby area, northwestern Montana.

Chicago Style (17th ed.) Citation

Boettcher, Arnold J., and Kathleen R. Wilke. Ground-water Resources in the Libby Area, Northwestern Montana.

MLA (9th ed.) Citation

Boettcher, Arnold J., and Kathleen R. Wilke. Ground-water Resources in the Libby Area, Northwestern Montana.

Warning: These citations may not always be 100% accurate.