Cita APA (7th ed.)
Breeden, R. L. (1971). Nomads of the world (ed.). National geographic society.
Cita Chicago (17th ed.)
Breeden, Robert L. Nomads of the World. ed. New delhi: National geographic society, 1971.
Cita MLA (9th ed.)
Breeden, Robert L. Nomads of the World. ed. National geographic society, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.