Summers, D. (1987). Longman dictionary of contemporary English (New ed.). Longman.
芝加哥风格引文Summers, Della. Longman Dictionary of Contemporary English. New ed. Harlow, Essex, England: Longman, 1987.
MLA引文Summers, Della. Longman Dictionary of Contemporary English. New ed. Longman, 1987.
警告：这些引文格式不一定是100％准确.