Cita APA (7th ed.)
McHale, T. J., Christenson, A. A., & Roberts, K. J. (1986). Introductory algebra, programmed (2nd ed.). Addison-Wesley Pub. Co..
Cita Chicago (17th ed.)
McHale, Thomas J., Allan A. Christenson, i Keith J. Roberts. Introductory Algebra, Programmed. 2nd ed. Reading, Mass.: Addison-Wesley Pub. Co., 1986.
Cita MLA (9th ed.)
McHale, Thomas J., et al. Introductory Algebra, Programmed. 2nd ed. Addison-Wesley Pub. Co., 1986.
Atenció: Aquestes cites poden no estar 100% correctes.