Cita APA (7th ed.)

Hungerford, T. W., Jovell, I., & Mayberry, B. (2002). Precalculus: A graphing approach. Holt, Rinehart and Winston.

Cita Chicago (17th ed.)

Hungerford, Thomas W., Irene Jovell, i Betty Mayberry. Precalculus: A Graphing Approach. Austin: Holt, Rinehart and Winston, 2002.

Cita MLA (9th ed.)

Hungerford, Thomas W., et al. Precalculus: A Graphing Approach. Holt, Rinehart and Winston, 2002.