APA引文

Chafee, Z. (1954). Free speech in United States. Harward University press.

Chicago Edition Citation

Chafee, Zechariach. Free Speech in United States. Cambridge: Harward University press, 1954.

MLA引文

Chafee, Zechariach. Free Speech in United States. Harward University press, 1954.

警告：這些引文格式不一定是100％准確.