Pilot plant: The U.P. Paper Mill and the fascinating pulp-and-paper industry. The U.P. Engineer.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"Pilot Plant: The U.P. Paper Mill and the Fascinating Pulp-and-paper Industry." The U.P. Engineer .
एमएलए (9वां संस्करण) प्रशस्ति पत्र"Pilot Plant: The U.P. Paper Mill and the Fascinating Pulp-and-paper Industry." The U.P. Engineer, .
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.