Lesikar, R. V. (1976). BUSINESS COMMUNICATION (3rd.). RICHARD D. IRWIN ILLINUIS.
芝加哥风格引文Lesikar, Raymond V. BUSINESS COMMUNICATION. 3rd. Null: RICHARD D. IRWIN ILLINUIS, 1976.
MLA引文Lesikar, Raymond V. BUSINESS COMMUNICATION. 3rd. RICHARD D. IRWIN ILLINUIS, 1976.
警告：这些引文格式不一定是100％准确.