Leedy, P. D. (1992). Practical research: Planning and design (5th ed.). Prentice Hall.
芝加哥风格引文Leedy, Paul D. Practical Research: Planning and Design. 5th ed. New Jersey: Prentice Hall, 1992.
MLA引文Leedy, Paul D. Practical Research: Planning and Design. 5th ed. Prentice Hall, 1992.
警告：这些引文格式不一定是100％准确.