Cita APA (7a ed.)
Sobel, M. A., & Lerner, N. (1976). Algebra for college students. Prentice-Hall.
Cita Chicago Style (17a ed.)
Sobel, Max A., y Norbert Lerner. Algebra for College Students. Englewood Cliffs, N.J.: Prentice-Hall, 1976.
Cita MLA (9a ed.)
Sobel, Max A., y Norbert Lerner. Algebra for College Students. Prentice-Hall, 1976.
Precaución: Estas citas no son 100% exactas.