Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

Warning: These citations may not always be 100% accurate.