Duggal, K. N. (1983). Elements of public health engineering (3rd.). S. Chand.
シカゴスタイル引用形Duggal, K. N. Elements of Public Health Engineering. 3rd. New Delhi: S. Chand, 1983.
MLA引用形式Duggal, K. N. Elements of Public Health Engineering. 3rd. S. Chand, 1983.
警告: この引用は必ずしも正確ではありません.