Precalculus : functions and graphs.
- 5th ed. / Raymond A. Barnett, Michael Ziegler, Karl E. Byleen.
- Boston : McGraw Hill, 2001.
- xxiv, 837 p. : ill. ; 27 cm + 1 CD-ROM (4 3/4 in.)
- Barnett, Raymond A. Barnett, Ziegler & Byleen's precalculus series. .