Lal & Ashok Yadav. (2017). Air force, airmen selection test: Group X ( technical ) trades. Upkar Prakasan.
Chicago Edition CitationLal and Ashok Yadav. Air Force, Airmen Selection Test: Group X ( Technical ) Trades. Agra: Upkar Prakasan, 2017.
MLA引文Lal and Ashok Yadav. Air Force, Airmen Selection Test: Group X ( Technical ) Trades. Upkar Prakasan, 2017.
警告:這些引文格式不一定是100%准確.