Walker, G. (1990). Industrial heat exchangers: : a basic guide (2nd ed.). Hemisphere Pub. Corp.
शिकागो स्टाइल उद्धरणWalker, G. Industrial Heat Exchangers: : A Basic Guide. 2nd ed. New York: Hemisphere Pub. Corp, 1990.
एमएलए उद्धरणWalker, G. Industrial Heat Exchangers: : A Basic Guide. 2nd ed. Hemisphere Pub. Corp, 1990.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.