APA (7th ed.) Citation

Shakespeare, W., Thurber, S., & Witham, R. A. (1922). Macbeth. Allyn and Bacon.

Chicago Style (17th ed.) Citation

Shakespeare, William, Samuel Thurber, and R. Adelaide Witham. Macbeth. Boston: Allyn and Bacon, 1922.

MLA (9th ed.) Citation

Shakespeare, William, et al. Macbeth. Allyn and Bacon, 1922.