APA (7th ed.) Citation

Willis, D. (1998). Collins COBUILD Student's Grammar: Classroom Edition (Classroom ed.). HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Willis, Dave. Collins COBUILD Student's Grammar: Classroom Edition. Classroom ed. London: HarperCollins Publishers, 1998.

MLA (9th ed.) Citation

Willis, Dave. Collins COBUILD Student's Grammar: Classroom Edition. Classroom ed. HarperCollins Publishers, 1998.

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