Cita APA (7th ed.)
Kelley, D. R. (2006). Frontiers of history: Historical inquiry in the twentieth century. Yale University Press.
Cita Chicago (17th ed.)
Kelley, Donald R. Frontiers of History: Historical Inquiry in the Twentieth Century. New Haven: Yale University Press, 2006.
Cita MLA (9th ed.)
Kelley, Donald R. Frontiers of History: Historical Inquiry in the Twentieth Century. Yale University Press, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.