APA (7th ed.) Citation

Campbell. (2011). Better sentence writing in 30 minutes a day. Advantage Quest Publications.

Chicago Style (17th ed.) Citation

Campbell. Better Sentence Writing in 30 Minutes a Day. Petaling Jaya: Advantage Quest Publications, 2011.

MLA (8th ed.) Citation

Campbell. Better Sentence Writing in 30 Minutes a Day. Advantage Quest Publications, 2011.

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