एपीए उद्धरण

Land Use Board. (1996). Watershed atlas: Chalakudy river. Kerala State Land Use Board.

शिकागो स्टाइल उद्धरण

Land Use Board. Watershed Atlas: Chalakudy River. Thiruvananthapuram: Kerala State Land Use Board, 1996.

एमएलए उद्धरण

Land Use Board. Watershed Atlas: Chalakudy River. Kerala State Land Use Board, 1996.