APA引文

Freud, S. (1949). The ego and the Id. Hogarth.

芝加哥风格引文

Freud, Sigmund. The Ego and the Id. Bradford: Hogarth, 1949.

MLA引文

Freud, Sigmund. The Ego and the Id. Hogarth, 1949.

警告：这些引文格式不一定是100％准确.