APA (7th ed.) Citation

Campbell, J. (1984). The masks of god: Occidental mythology. Penguin books.

Chicago Style (17th ed.) Citation

Campbell, Joseph. The Masks of God: Occidental Mythology. New York [etc.]: Penguin books, 1984.

MLA (9th ed.) Citation

Campbell, Joseph. The Masks of God: Occidental Mythology. Penguin books, 1984.