Husain Majid. (2023). Paryavaran Evam Paristhithiki for Civil Services Examination (6th ed.). G.K. Publications.
芝加哥风格引文Husain Majid. Paryavaran Evam Paristhithiki for Civil Services Examination. 6th ed. Faridabad: G.K. Publications, 2023.
MLA引文Husain Majid. Paryavaran Evam Paristhithiki for Civil Services Examination. 6th ed. G.K. Publications, 2023.
警告：这些引文格式不一定是100％准确.