APA (7th ed.) Citation

(1991). The Macmillan encyclopedia (Rev. & updated.). Macmillan.

Chicago Style (17th ed.) Citation

The Macmillan Encyclopedia. Rev. & updated. London: Macmillan, 1991.

MLA (9th ed.) Citation

The Macmillan Encyclopedia. Rev. & updated. Macmillan, 1991.