APA-referens

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

Chicago-stil citat

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

MLA-referens

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

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.