Akhtar, R. (1992). Pakistan year book (20th ed.). National Pub. House.
芝加哥风格引文Akhtar, Rafique. Pakistan Year Book. 20th ed. Karachi: National Pub. House, 1992.
MLA引文Akhtar, Rafique. Pakistan Year Book. 20th ed. National Pub. House, 1992.
警告：这些引文格式不一定是100％准确.