TROEH, F. R., HOBBS, J. A., & DONAHOUE, R. L. (1980). Soil and water conservation: For productivity and environmental protection. Prentice-Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTROEH, Frederick R., J. Arthur HOBBS, और Roy L. DONAHOUE. Soil and Water Conservation: For Productivity and Environmental Protection. Englewood Cliffs: Prentice-Hall, 1980.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTROEH, Frederick R., et al. Soil and Water Conservation: For Productivity and Environmental Protection. Prentice-Hall, 1980.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.