Columbia subject headings:
Shakespeare, William, 1564-1616. Macbeth.
Harvard subject headings:
Macbeth, King of Scotland, active 11th century--In literature.
Regicides in literature.
Shakespeare, William, 1564-1616. Macbeth.
Tragedy.
Princeton subject headings:
Macbeth, King of Scotland, active 11th century--In literature.
Shakespeare, William, 1564-1616. Macbeth.