Cita APA (7th ed.)

Penna, J. A., Keedy, M. L., & Bittinger, M. L. (1991). Intermediate algebra 6th edition: Instructors's solution manual (6th ed.). Addison-Wesley.

Cita Chicago (17th ed.)

Penna, Judith A., Mervin L. Keedy, i Marvin L. Bittinger. Intermediate Algebra 6th Edition: Instructors's Solution Manual. 6th ed. Reading, Mass: Addison-Wesley, 1991.

Cita MLA (9th ed.)

Penna, Judith A., et al. Intermediate Algebra 6th Edition: Instructors's Solution Manual. 6th ed. Addison-Wesley, 1991.