Cita APA (7th ed.)
Herm, G. (1977). The celts: The people who came out of the darkness (1 ed.). St. Martin's Press.
Cita Chicago (17th ed.)
Herm, Gerhard. The Celts: The People Who Came Out of the Darkness. 1 ed. New York: St. Martin's Press, 1977.
Cita MLA (9th ed.)
Herm, Gerhard. The Celts: The People Who Came Out of the Darkness. 1 ed. St. Martin's Press, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.