Census of India. (1991). Economic Tables. Directorate of Census Operations.
シカゴスタイル引用形Census of India. Economic Tables. Thiruvananthapurm: Directorate of Census Operations, 1991.
MLA引用形式Census of India. Economic Tables. Directorate of Census Operations, 1991.
警告: この引用は必ずしも正確ではありません.