Ohio Society of Surveyors and Civil Engineers. Annual report of the Ohio Society of Surveyors and Civil Engineers. Hann & Adair.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOhio Society of Surveyors and Civil Engineers. Annual Report of the Ohio Society of Surveyors and Civil Engineers. Columbus: Hann & Adair.
एमएलए (8वां संस्करण) प्रशस्ति पत्रOhio Society of Surveyors and Civil Engineers. Annual Report of the Ohio Society of Surveyors and Civil Engineers. Hann & Adair.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.