APA (7 वां संस्करण) प्रशस्ति पत्र

Lebbe, I. (1982). North West Land & Water Resources Development Project: Vanathavillu socio-economic study. Agrarian Research & Training Institute.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Lebbe, Ishak. North West Land & Water Resources Development Project: Vanathavillu Socio-economic Study. Colombo: Agrarian Research & Training Institute, 1982.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Lebbe, Ishak. North West Land & Water Resources Development Project: Vanathavillu Socio-economic Study. Agrarian Research & Training Institute, 1982.