APA aipamena

Verhofstadt, G. (1991). Burgermanifest. [S.l.]: [s.n.].

Chicago Style aipamena

Verhofstadt, Guy. Burgermanifest. [S.l.]: [s.n.], 1991.

MLA aipamena

Verhofstadt, Guy. Burgermanifest. [S.l.]: [s.n.], 1991.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.