Freeman, R. E. a. (2015). Bridging the Value Gap. Harpercollins.
芝加哥风格引文Freeman, R. Edward; auster. Bridging the Value Gap. Noida: Harpercollins, 2015.
MLA引文Freeman, R. Edward; auster. Bridging the Value Gap. Harpercollins, 2015.
警告：这些引文格式不一定是100％准确.