Lauer, B., & Rubel, F. (2004). Water fluoridation principles and practices (5th ed.). American Water Works Association.

Lauer, Bill, and Frederick Rubel. Water Fluoridation Principles and Practices. 5th ed. Denver, CO: American Water Works Association, 2004.

Lauer, Bill, and Frederick Rubel. Water Fluoridation Principles and Practices. 5th ed. American Water Works Association, 2004.