Cita APA

(2001). Thinkwell's precalculus. [Austin, Tex.]: Thinkwell.

Chicago Style Citation

Thinkwell's Precalculus. [Austin, Tex.]: Thinkwell, 2001.

Cita MLA

Thinkwell's Precalculus. [Austin, Tex.]: Thinkwell, 2001.

Atenció: Aquestes cites poden no estar 100% correctes.