APA (7th ed.) Citation

Carter, J. F., Unofficial observer, & Observer, u. (1969). American messiahs. Kennikat Press.

Chicago Style (17th ed.) Citation

Carter, John Franklin, Unofficial observer, and unofficial Observer. American Messiahs. Port Washington, N.Y.: Kennikat Press, 1969.

MLA (9th ed.) Citation

Carter, John Franklin, et al. American Messiahs. Kennikat Press, 1969.