APA (7th ed.) Citation

Longman (Firm). (1984). Longman dictionary of the English language (Standard ed.). Longman.

Chicago Style (17th ed.) Citation

Longman (Firm). Longman Dictionary of the English Language. Standard ed. Harlow, Essex, England: Longman, 1984.

MLA (9th ed.) Citation

Longman (Firm). Longman Dictionary of the English Language. Standard ed. Longman, 1984.

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