Bracken, H. M. (1994). Freedom of speech: Words are not deeds. Praeger.
芝加哥风格引文Bracken, Harry M. Freedom of Speech: Words Are Not Deeds. Westport, Conn.: Praeger, 1994.
MLA引文Bracken, Harry M. Freedom of Speech: Words Are Not Deeds. Praeger, 1994.
警告：这些引文格式不一定是100％准确.