Cita APA (7th ed.)
Ashley, J. P. (1977). Principles of intermediate algebra. Glencoe Press.
Cita Chicago (17th ed.)
Ashley, John P. Principles of Intermediate Algebra. Encino, Calif.: Glencoe Press, 1977.
Cita MLA (9th ed.)
Ashley, John P. Principles of Intermediate Algebra. Glencoe Press, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.