Henkel, R. (2006). South Eastern European countries on their way to Europe. Forum Ifl 5.
Chicago Style aipamenaHenkel, Reinhard. "South Eastern European Countries On Their Way to Europe." Forum Ifl 5 2006.
MLA aipamenaHenkel, Reinhard. "South Eastern European Countries On Their Way to Europe." Forum Ifl 5 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.