S. K. Duggal. (2019). Building Materials (5th ed.). New Age International.
芝加哥风格引文S. K. Duggal. Building Materials. 5th ed. New Delhi: New Age International, 2019.
MLA引文S. K. Duggal. Building Materials. 5th ed. New Age International, 2019.
警告：这些引文格式不一定是100％准确.