Cita APA (7th ed.)

Herbert, F., & Herbert, B. (1986). Man of two worlds. Ace Books.

Cita Chicago (17th ed.)

Herbert, Frank, i Brian Herbert. Man of Two Worlds. New York: Ace Books, 1986.

Cita MLA (9th ed.)

Herbert, Frank, i Brian Herbert. Man of Two Worlds. Ace Books, 1986.