Kolby, J., & Vaughn, D. (2009). GMAT Math prep course. Nova Press.
芝加哥风格引文Kolby, Jeff, 与 Derrick Vaughn. GMAT Math Prep Course. Los Angeles, CA: Nova Press, 2009.
MLA引文Kolby, Jeff, 与 Derrick Vaughn. GMAT Math Prep Course. Nova Press, 2009.
警告：这些引文格式不一定是100％准确.