Rucker, W. E., & Diley, C. A. (1979). Heath mathematics. Heath.
Cita Chicago (17th ed.)Rucker, Walter E., i Clyde A. Diley. Heath Mathematics. Lexington, MA: Heath, 1979.
Cita MLA (9th ed.)Rucker, Walter E., i Clyde A. Diley. Heath Mathematics. Heath, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.