APA (7 वां संस्करण) प्रशस्ति पत्र
Ladd, E. C., & Bowman, K. H. (1998). What's wrong: A survey of American satisfaction and complaint. AEI Press ; Roper Center for Public Opinion Research.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Ladd, Everett Carll, और Karlyn H. Bowman. What's Wrong: A Survey of American Satisfaction and Complaint. Washington, D.C. : Storrs, Conn.: AEI Press ; Roper Center for Public Opinion Research, 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Ladd, Everett Carll, और Karlyn H. Bowman. What's Wrong: A Survey of American Satisfaction and Complaint. AEI Press ; Roper Center for Public Opinion Research, 1998.
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