APA (7th ed.) Citation

(1991). Longman active study dictionary of English (New edition.). Longman.

Chicago Style (17th ed.) Citation

Longman Active Study Dictionary of English. New edition. Harlow: Longman, 1991.

MLA (9th ed.) Citation

Longman Active Study Dictionary of English. New edition. Longman, 1991.

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