Summers, D. (1987). Longman dictionary of contemporary English (New ed.). Longman.
Chicagoスタイル(17版)引用形式Summers, Della. Longman Dictionary of Contemporary English. New ed. Harlow, Essex, England: Longman, 1987.
MLA(8版)引用形式Summers, Della. Longman Dictionary of Contemporary English. New ed. Longman, 1987.
警告: この引用は必ずしも正確ではありません.