APA (7th ed.) Citation

Harper Collins & Thompson, G. Collins Cobuild, English guides: Helping learners with real English. Harper Collins.

Chicago Style (17th ed.) Citation

Harper Collins and Geoff Thompson. Collins Cobuild, English Guides: Helping Learners with Real English. London: Harper Collins.

MLA (8th ed.) Citation

Harper Collins and Geoff Thompson. Collins Cobuild, English Guides: Helping Learners with Real English. Harper Collins.

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