(2001). Thinkwell's precalculus. [Austin, Tex.]: Thinkwell.
Chicago Style CitationThinkwell's Precalculus. [Austin, Tex.]: Thinkwell, 2001.
Cita MLAThinkwell's Precalculus. [Austin, Tex.]: Thinkwell, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.