Keedy, M. L. (1971). Exploring modern mathematics (Rev. ed.].). Holt, Rinehart and Winston.
Cita Chicago (17th ed.)Keedy, Mervin L. Exploring Modern Mathematics. Rev. ed.]. New York: Holt, Rinehart and Winston, 1971.
Cita MLA (9th ed.)Keedy, Mervin L. Exploring Modern Mathematics. Rev. ed.]. Holt, Rinehart and Winston, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.