APA引文

(2005). Thinkwell's precalculus. [Austin Tex]: Thinkwell Corporation.

Trích dẫn kiểu Chicago

Thinkwell's Precalculus. [Austin Tex]: Thinkwell Corporation, 2005.

MLA引文

Thinkwell's Precalculus. [Austin Tex]: Thinkwell Corporation, 2005.

警告：這些引文格式不一定是100％准確.