Land Use Board. (1996). Watershed atlas: Chalakudy river. Kerala State Land Use Board.
シカゴスタイル引用形Land Use Board. Watershed Atlas: Chalakudy River. Thiruvananthapuram: Kerala State Land Use Board, 1996.
MLA引用形式Land Use Board. Watershed Atlas: Chalakudy River. Kerala State Land Use Board, 1996.
警告: この引用は必ずしも正確ではありません.