Hohenberg, P. M. (1967). Chemicals in western Europe:1850-1914: An economic study of technical change. Chicago: Rand McNally And Company.
शिकागो स्टाइल उद्धरणHohenberg, Paul M. Chemicals in Western Europe:1850-1914: An Economic Study of Technical Change. Chicago: Rand McNally And Company, 1967.
एमएलए उद्धरणHohenberg, Paul M. Chemicals in Western Europe:1850-1914: An Economic Study of Technical Change. Chicago: Rand McNally And Company, 1967.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.