Asp, Caroline. " 'Be bloody, bold and resolute': Tragic Action and Sexual Stereotyping in Macbeth. " Studies in Philology LXXVIII, No.2 (Spring 1981): 153-69.
Discusses the effect that stereotyping sexual roles has on the major characters in Macbeth.
Biggins, Dennis. "Sexuality, Witchcraft, and Violence in Macbeth." Shakespeare Studies VIII (1975): 25577.
Contends that there are structural and thematic links between sexuality and various forms of violence in Macbeth. Biggins notes that these issues are also associated with the depiction of witch craft in the play.
Boyer, Clarence Valentine. "Macbeth." In his The Villain as Tragic Hero in Elizabethan Tragedy, pp. 187-219. 1914. Reprint. New York: Russell &Russell, 1964.
Presents a detailed examination of Macbeth's character, tracing the development of his thought throughout the play's action.
Brown, John Russell, ed. Focus on "Macbeth"......