Verhofstadt, G. (1991). Burgermanifest. [S.l.]: [s.n.].
Chicago Style (17th ed.) CitationVerhofstadt, Guy. Burgermanifest. [S.l.]: [s.n.], 1991.
MLA引文Verhofstadt, Guy. Burgermanifest. [S.l.]: [s.n.], 1991.
警告：這些引文格式不一定是100％准確.
APA引文