Heilbroner, R. (1996). Teachings from the worldly philosophy. New York: W.W. Norton.
शिकागो स्टाइल उद्धरणHeilbroner, Robert. Teachings From the Worldly Philosophy. New York: W.W. Norton, 1996.
एमएलए उद्धरणHeilbroner, Robert. Teachings From the Worldly Philosophy. New York: W.W. Norton, 1996.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.