Frankel, J. (1973). Contemporary international theory... O.U.P..
Chicago Style (17th ed.) ZitazioaFrankel, Joseph. Contemporary International Theory... New York: O.U.P., 1973.
MLA (9th ed.) ZitazioaFrankel, Joseph. Contemporary International Theory... O.U.P., 1973.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.