APA (7th ed.) Zitazioa
Georgeoff, P. J. (1968). The social education of Bulgarian youth. University of Minnesota Press.
Chicago Style (17th ed.) Zitazioa
Georgeoff, Peter John. The Social Education of Bulgarian Youth. Minneapolis: University of Minnesota Press, 1968.
MLA (9th ed.) Zitazioa
Georgeoff, Peter John. The Social Education of Bulgarian Youth. University of Minnesota Press, 1968.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.