Clark, I. (1997). Globalization and fragmentation: International relations in twentieth century.
Chicago Style aipamenaClark, Ian. Globalization and Fragmentation: International Relations in Twentieth Century. Oxford Uvty Press: Oxford, 1997.
MLA aipamenaClark, Ian. Globalization and Fragmentation: International Relations in Twentieth Century. 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.