(2005). Thinkwell's precalculus. [Austin Tex]: Thinkwell Corporation.
Trích dẫn kiểu ChicagoThinkwell's Precalculus. [Austin Tex]: Thinkwell Corporation, 2005.
MLA CitationThinkwell's Precalculus. [Austin Tex]: Thinkwell Corporation, 2005.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.