(1991). Biological monitoring: Signals from the environment. Braunschweig: Vieweg.
शिकागो स्टाइल उद्धरणBiological Monitoring: Signals From the Environment. Braunschweig: Vieweg, 1991.
एमएलए उद्धरणBiological Monitoring: Signals From the Environment. Braunschweig: Vieweg, 1991.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.