APA引文

Sigmund, F. (1973). Introductory lectures on psychoanalysis. Penguin books.

Chicago Edition Citation

Sigmund, Freud. Introductory Lectures on Psychoanalysis. Penguin books, 1973.

MLA引文

Sigmund, Freud. Introductory Lectures on Psychoanalysis. Penguin books, 1973.

警告：这些引文格式不一定是100％准确.