APA引文

Stassen, J. L. (1969). Over democratie. [s.n.].

Chicago Style (17th ed.) Citation

Stassen, Johann Ludwig. Over Democratie. [S.l.]: [s.n.], 1969.

MLA引文

Stassen, Johann Ludwig. Over Democratie. [s.n.], 1969.

警告：这些引文格式不一定是100％准确.