(1981). Sixth five year pla 1980-85. State Planning Board,Govt.of Kerala.
シカゴスタイル引用形Sixth Five Year Pla 1980-85. Thiruvananthapuarm: State Planning Board,Govt.of Kerala, 1981.
MLA引用形式Sixth Five Year Pla 1980-85. State Planning Board,Govt.of Kerala, 1981.
警告: この引用は必ずしも正確ではありません.