APA (7th ed.) Citation

Shakespeare, W., Strachan, C. S., & O'Shaughnessy, P. (1991). Romeo and Juliet. Iverna.

Chicago Style (17th ed.) Citation

Shakespeare, William, C. S. Strachan, and Patrick O'Shaughnessy. Romeo and Juliet. Toronto: Iverna, 1991.

MLA (9th ed.) Citation

Shakespeare, William, et al. Romeo and Juliet. Iverna, 1991.