Cita APA (7th ed.)

Goodman, A., & Hirsch, L. (2000). Precalculus: Understanding functions. Brooks/Cole.

Cita Chicago (17th ed.)

Goodman, Arthur, i Lewis Hirsch. Precalculus: Understanding Functions. Pacific Grove, CA: Brooks/Cole, 2000.

Cita MLA (9th ed.)

Goodman, Arthur, i Lewis Hirsch. Precalculus: Understanding Functions. Brooks/Cole, 2000.