Cita APA (7a ed.)

Shakespeare, W., & Crowther, J. (2004). Richard III. SparkNotes.

Cita Chicago Style (17a ed.)

Shakespeare, William, y John Crowther. Richard III. New York: SparkNotes, 2004.

Cita MLA (9a ed.)

Shakespeare, William, y John Crowther. Richard III. SparkNotes, 2004.