Bender, P. S. (1976). Design and operation of customer service systems. AMACOM.
शिकागो स्टाइल उद्धरणBender, Paul S. Design and Operation of Customer Service Systems. New York: AMACOM, 1976.
एमएलए उद्धरणBender, Paul S. Design and Operation of Customer Service Systems. AMACOM, 1976.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.