Angel, A. R. (2009). Elementary algebra for college students (Custom edition for Cayuga Community College.). Pearson Custom Publishing.
Cita Chicago (17th ed.)Angel, Allen R. Elementary Algebra for College Students. Custom edition for Cayuga Community College. Englewood Cliffs, N.J: Pearson Custom Publishing, 2009.
Cita MLA (9th ed.)Angel, Allen R. Elementary Algebra for College Students. Custom edition for Cayuga Community College. Pearson Custom Publishing, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.