APA (7th ed.) Citation

Summers, D. (2003). Longman dictionary of contemporary English (4th ed.). Longman.

Chicago Style (17th ed.) Citation

Summers, Della. Longman Dictionary of Contemporary English. 4th ed. Harlow: Longman, 2003.

MLA (9th ed.) Citation

Summers, Della. Longman Dictionary of Contemporary English. 4th ed. Longman, 2003.

Warning: These citations may not always be 100% accurate.