एपीए उद्धरण

KeralaStateLandUseboard. (2007). Vibhava bhoopada report: Chavakkad Block. KeralaStateLandUseBoard.

शिकागो स्टाइल उद्धरण

KeralaStateLandUseboard. Vibhava Bhoopada Report: Chavakkad Block. thiruvananthapuram: KeralaStateLandUseBoard, 2007.

एमएलए उद्धरण

KeralaStateLandUseboard. Vibhava Bhoopada Report: Chavakkad Block. KeralaStateLandUseBoard, 2007.