Akhtar, R. (1993). Pakistan year book (21th ed.). National Pub. House.
芝加哥风格引文Akhtar, Rafique. Pakistan Year Book. 21th ed. Karachi: National Pub. House, 1993.
MLA引文Akhtar, Rafique. Pakistan Year Book. 21th ed. National Pub. House, 1993.
警告：这些引文格式不一定是100％准确.