DUNCKEL JACQUELINE. (1994). EFFECTIVE SPEAKING FOR BUSINESS SUCCESS MAKING CONFIDENT ... AND MORE. LANCER INTERNATIONAL.
芝加哥风格引文DUNCKEL JACQUELINE. EFFECTIVE SPEAKING FOR BUSINESS SUCCESS MAKING CONFIDENT ... AND MORE. INDIA CANADA USA: LANCER INTERNATIONAL, 1994.
MLA引文DUNCKEL JACQUELINE. EFFECTIVE SPEAKING FOR BUSINESS SUCCESS MAKING CONFIDENT ... AND MORE. LANCER INTERNATIONAL, 1994.
警告：这些引文格式不一定是100％准确.