Hahner, J. C. (2002). Speaking clearly: Improving voice and diction. New York: McGraw-Hill.
シカゴスタイル引用形Hahner, Jeffrey C. Speaking Clearly: Improving Voice and Diction. New York: McGraw-Hill, 2002.
MLA引用形式Hahner, Jeffrey C. Speaking Clearly: Improving Voice and Diction. New York: McGraw-Hill, 2002.
警告: この引用は必ずしも正確ではありません.