Longman. (2002). Language Activator: Helps You Write And Speak Natural English (2nd.). Pearson.
芝加哥风格引文Longman. Language Activator: Helps You Write And Speak Natural English. 2nd. Delhi: Pearson, 2002.
MLA引文Longman. Language Activator: Helps You Write And Speak Natural English. 2nd. Pearson, 2002.
警告：这些引文格式不一定是100％准确.