APA (7th ed.) Citation

Harper Collins. (1997). Collins Cobuild, English dictionary. Harper Collins.

Chicago Style (17th ed.) Citation

Harper Collins. Collins Cobuild, English Dictionary. London: Harper Collins, 1997.

MLA (8th ed.) Citation

Harper Collins. Collins Cobuild, English Dictionary. Harper Collins, 1997.

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