Keeler, R. (2005). Double-check your workplace English. New Day.
芝加哥风格引文Keeler, Richard. Double-check Your Workplace English. Quezon City: New Day, 2005.
MLA引文Keeler, Richard. Double-check Your Workplace English. New Day, 2005.
警告：这些引文格式不一定是100％准确.