APA (7th ed.) Citation

Parker, T. H., & Baldridge, S. J. (2008). Elementary Geometry for Teachers. Sefton-Ash Publishing.

Chicago Style (17th ed.) Citation

Parker, Thomas H., and Scott J. Baldridge. Elementary Geometry for Teachers. Okemos, Michigan: Sefton-Ash Publishing, 2008.

MLA (9th ed.) Citation

Parker, Thomas H., and Scott J. Baldridge. Elementary Geometry for Teachers. Sefton-Ash Publishing, 2008.