APA (7th ed.) Citation

(1993). Longman language activator: The world's first production dictionary (1st publ.). Longman.

Chicago Style (17th ed.) Citation

Longman Language Activator: The World's First Production Dictionary. 1st publ. Harlow: Longman, 1993.

MLA (9th ed.) Citation

Longman Language Activator: The World's First Production Dictionary. 1st publ. Longman, 1993.

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