Gerver, R. K., Sgroi, R., Lynch, C., Hansen, M., & Molina, D. (1998). Geometry: An integrated approach. National Textbook Company.
Lua i Stíl Chicago (17ú heag.)Gerver, Robert K., Richard Sgroi, Chicha Lynch, Mary Hansen, agus David Molina. Geometry: An Integrated Approach. Illinois: National Textbook Company, 1998.
Lua MLA (8ú heag.)Gerver, Robert K., et al. Geometry: An Integrated Approach. National Textbook Company, 1998.
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