एपीए उद्धरण

(2004). Thinkwell's precalculus: Companion workbook. [Austin]: Thinkwell Corporation.

शिकागो स्टाइल उद्धरण

Thinkwell's Precalculus: Companion Workbook. [Austin]: Thinkwell Corporation, 2004.

एमएलए उद्धरण

Thinkwell's Precalculus: Companion Workbook. [Austin]: Thinkwell Corporation, 2004.