APA (7th ed.) Citation

Willis, D., & Wright, J. (1995). Collins COBUILD basic grammar. HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Willis, Dave, and Jon Wright. Collins COBUILD Basic Grammar. London: HarperCollins Publishers, 1995.

MLA (9th ed.) Citation

Willis, Dave, and Jon Wright. Collins COBUILD Basic Grammar. HarperCollins Publishers, 1995.

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