Professional. (2019). Petroleum Act, 1934 alongwith Rules, 2002. Professional Book Publishers.
芝加哥风格引文Professional. Petroleum Act, 1934 Alongwith Rules, 2002. Professional Book Publishers, 2019.
MLA引文Professional. Petroleum Act, 1934 Alongwith Rules, 2002. Professional Book Publishers, 2019.
警告：这些引文格式不一定是100％准确.