Kolby, J. &. o. (2015). GMAT: DATA Sufficiency Prep Course. Prakash Pub.
Chicagoスタイル(17版)引用形式Kolby, Jeff & others. GMAT: DATA Sufficiency Prep Course. New Delhi: Prakash Pub, 2015.
MLA(9版)引用形式Kolby, Jeff & others. GMAT: DATA Sufficiency Prep Course. Prakash Pub, 2015.
警告: この引用は必ずしも正確ではありません.