APA (7th ed.) Citation

Shakespeare, W., Sagarra, J. M. d., & Sagarra, J. d. (1969). Ricard III. Selecta.

Chicago Style (17th ed.) Citation

Shakespeare, William, Josep M. de Sagarra, and Joan de Sagarra. Ricard III. Barcelona: Selecta, 1969.

MLA (9th ed.) Citation

Shakespeare, William, et al. Ricard III. Selecta, 1969.