APA Citation

Willis, D. (2006). Collins Cobuild Intermediate English Grammar. HarperCollins Pub.

Chicago Style Citation

Willis, Dave. Collins Cobuild Intermediate English Grammar. HarperCollins Pub, 2006.

MLA Citation

Willis, Dave. Collins Cobuild Intermediate English Grammar. HarperCollins Pub, 2006.

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