REIN, D. P. (1985). Grolier advanced english course 7. Grolier International.
芝加哥风格引文REIN, David P. Grolier Advanced English Course 7. (sl): Grolier International, 1985.
MLA引文REIN, David P. Grolier Advanced English Course 7. Grolier International, 1985.
警告：这些引文格式不一定是100％准确.