APA (7th ed.) Citation

Williams, M., & Shakespeare, W. (2015). Romeo and Juliet. Walker Books.

Chicago Style (17th ed.) Citation

Williams, Marcia, and William Shakespeare. Romeo and Juliet. London: Walker Books, 2015.

MLA (9th ed.) Citation

Williams, Marcia, and William Shakespeare. Romeo and Juliet. Walker Books, 2015.