Cita APA (7a ed.)

Keedy, M. L., & Bittinger, M. L.. (1979). Introductory algebra (3rd ed.). Addison-Wesley.

Cita Chicago Style (17a ed.)

Keedy, Mervin L., y Marvin L. Bittinger. Introductory Algebra. 3rd ed. Reading, Massachusetts [etc.]: Addison-Wesley, 1979.

Cita MLA (9a ed.)

Keedy, Mervin L., y Marvin L. Bittinger. Introductory Algebra. 3rd ed. Addison-Wesley, 1979.