(2003). The psychology of problem solving. Cambridge, UK: Cambridge University Press.
शिकागो स्टाइल उद्धरणThe Psychology of Problem Solving. Cambridge, UK: Cambridge University Press, 2003.
एमएलए उद्धरणThe Psychology of Problem Solving. Cambridge, UK: Cambridge University Press, 2003.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.