Cotton, F. A., Darlington, C. L., & Lynch, L. D. (1973). Teacher's guide for Chemistry: An investigative approach (Rev. ed.). Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Cotton, F. Albert, C. Leroy Darlington, agus Lawrence D. Lynch. Teacher's Guide for Chemistry: An Investigative Approach. Rev. ed. Boston: Houghton Mifflin, 1973.
Lua MLA (8ú heag.)Cotton, F. Albert, et al. Teacher's Guide for Chemistry: An Investigative Approach. Rev. ed. Houghton Mifflin, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.