S. K. Duggal. (2019). Building Materials (5th ed.). New Age International.
Chicagoスタイル(17版)引用形式S. K. Duggal. Building Materials. 5th ed. New Delhi: New Age International, 2019.
MLA(9版)引用形式S. K. Duggal. Building Materials. 5th ed. New Age International, 2019.
警告: この引用は必ずしも正確ではありません.