Cita APA (7th ed.)

Swokowski, E. W., & Cole, J. A. (1998). Precalculus: Functions and graphs (8th ed.). Brooks/Cole Publishing.

Cita Chicago (17th ed.)

Swokowski, Earl W., i Jeffrey A. Cole. Precalculus: Functions and Graphs. 8th ed. Pacific Grove, CA: Brooks/Cole Publishing, 1998.

Cita MLA (9th ed.)

Swokowski, Earl W., i Jeffrey A. Cole. Precalculus: Functions and Graphs. 8th ed. Brooks/Cole Publishing, 1998.