APA

Freud S., . (1977). Penguin Freud library, Vol.07: On sexuality: Three essays on the theory of sexuality and other works. : Penguin Books Inc., New York.

Chicago

Freud Sigmund, . 1977. Penguin Freud library, Vol.07: On sexuality: Three essays on the theory of sexuality and other works. : Penguin Books Inc., New York.

Harvard

Freud S., . (1977). Penguin Freud library, Vol.07: On sexuality: Three essays on the theory of sexuality and other works. : Penguin Books Inc., New York.

MLA

Freud Sigmund, . Penguin Freud library, Vol.07: On sexuality: Three essays on the theory of sexuality and other works. : Penguin Books Inc., New York. 1977.