Professional Book Publishers. (2019). The Air (Prevention and Control of Pollution) Act, 1981 (14 of 1981). Professional Book Publishers.
芝加哥风格引文Professional Book Publishers. The Air (Prevention and Control of Pollution) Act, 1981 (14 of 1981). New Delhi: Professional Book Publishers, 2019.
MLA引文Professional Book Publishers. The Air (Prevention and Control of Pollution) Act, 1981 (14 of 1981). Professional Book Publishers, 2019.
警告：这些引文格式不一定是100％准确.