(2004). Thinkwell's precalculus: Companion workbook. [Austin]: Thinkwell Corporation.
シカゴスタイル引用形Thinkwell's Precalculus: Companion Workbook. [Austin]: Thinkwell Corporation, 2004.
MLA引用形式Thinkwell's Precalculus: Companion Workbook. [Austin]: Thinkwell Corporation, 2004.
警告: この引用は必ずしも正確ではありません.