Cotton, F. A., Darlington, C. L., & Lynch, L. D. (1973). Teacher's guide for Chemistry: An investigative approach (Rev. ed.). Houghton Mifflin.

Cotton, F. Albert, C. Leroy Darlington, and Lawrence D. Lynch. Teacher's Guide for Chemistry: An Investigative Approach. Rev. ed. Boston: Houghton Mifflin, 1973.

Cotton, F. Albert, et al. Teacher's Guide for Chemistry: An Investigative Approach. Rev. ed. Houghton Mifflin, 1973.