Cita APA (7th ed.)

Kaufmann, J. E., & Schwitters, K. (2012). Elementary and intermediate algebra: A combined approach (6th ed.). Thomson Brooks/Cole.

Cita Chicago (17th ed.)

Kaufmann, Jerome E., i Karen Schwitters. Elementary and Intermediate Algebra: A Combined Approach. 6th ed. Belmont, Calif: Thomson Brooks/Cole, 2012.

Cita MLA (9th ed.)

Kaufmann, Jerome E., i Karen Schwitters. Elementary and Intermediate Algebra: A Combined Approach. 6th ed. Thomson Brooks/Cole, 2012.