Marsh,Peter, & Morris,Desmond. (1988). Tribes. Pyramid.
Chicago Style aipamenaMarsh,Peter, and Morris,Desmond. Tribes. London: Pyramid, 1988.
MLA aipamenaMarsh,Peter, and Morris,Desmond. Tribes. Pyramid, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.