Nelson, P. E. (1990). Confidence in public speaking (4th ed.). Wm.C.Brown.
Chicagoスタイル(17版)引用形式Nelson, Paul Edward. Confidence in Public Speaking. 4th ed. Iowa: Wm.C.Brown, 1990.
MLA(9版)引用形式Nelson, Paul Edward. Confidence in Public Speaking. 4th ed. Wm.C.Brown, 1990.
警告: この引用は必ずしも正確ではありません.