Leech, G. N., & Svartvik, J. (1994). A communicative grammar of english (2a. ed.). Longman.
芝加哥风格引文Leech, Geoffrey N., 与 Jan Svartvik. A Communicative Grammar of English. 2a. ed. Londres: Longman, 1994.
MLA引文Leech, Geoffrey N., 与 Jan Svartvik. A Communicative Grammar of English. 2a. ed. Longman, 1994.
警告：这些引文格式不一定是100％准确.