Pfeiffer, W. S., & Keller, C. H. (2000). Proposal writing: The art of Friendly and winning persuasion. Prentice Hall.
芝加哥风格引文Pfeiffer, William S., 与 Charles H. Keller. Proposal Writing: The Art of Friendly and Winning Persuasion. Upper Saddle River, New Jersey: Prentice Hall, 2000.
MLA引文Pfeiffer, William S., 与 Charles H. Keller. Proposal Writing: The Art of Friendly and Winning Persuasion. Prentice Hall, 2000.
警告：这些引文格式不一定是100％准确.