Tracy, B. (2021). Eat That Frog! (03rd.). Berrett-Koehler Publishers.
Chicagoスタイル(17版)引用形式Tracy, Brian. Eat That Frog! 03rd. USA: Berrett-Koehler Publishers, 2021.
MLA(9版)引用形式Tracy, Brian. Eat That Frog! 03rd. Berrett-Koehler Publishers, 2021.
警告: この引用は必ずしも正確ではありません.