APA (7th ed.) Citation

Harper Collins Publishers & The University of Birmingham. (1993). Collins COBUILD: English usage. HarperCollinsAcademic.

Chicago Style (17th ed.) Citation

Harper Collins Publishers and The University of Birmingham. Collins COBUILD: English Usage. London: HarperCollinsAcademic, 1993.

MLA (9th ed.) Citation

Harper Collins Publishers and The University of Birmingham. Collins COBUILD: English Usage. HarperCollinsAcademic, 1993.

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