Elbaum, S. N. (2010). Grammar in context, level 3 student edition (5th ed.). Heinle, Cengage Learning.
芝加哥风格引文Elbaum, Sandra N. Grammar in Context, Level 3 Student Edition. 5th ed. Australia: Heinle, Cengage Learning, 2010.
MLA引文Elbaum, Sandra N. Grammar in Context, Level 3 Student Edition. 5th ed. Heinle, Cengage Learning, 2010.
警告：这些引文格式不一定是100％准确.