APA (7th ed.) Zitazioa
Barnett, R. A., Ziegler, M. R., & Byleen, K. E. (1999). Precalculus: Functions and graphs (4th ed.). WCB/McGraw-Hill.
Chicago Style (17th ed.) Zitazioa
Barnett, Raymond A., Michael R. Ziegler, eta Karl E. Byleen. Precalculus: Functions and Graphs. 4th ed. Boston: WCB/McGraw-Hill, 1999.
MLA (9th ed.) Zitazioa
Barnett, Raymond A., et al. Precalculus: Functions and Graphs. 4th ed. WCB/McGraw-Hill, 1999.
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