APA (7th ed.) Citation

McBratney, S. (2008). Guess how much i love u in the summer. Walker Books.

Chicago Style (17th ed.) Citation

McBratney, Sam. Guess How Much I Love U in the Summer. London: Walker Books, 2008.

MLA (9th ed.) Citation

McBratney, Sam. Guess How Much I Love U in the Summer. Walker Books, 2008.

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