APA

Freud S., Gay P., Riviere J. & Strachey J. (1989). The Ego and the Id. New York: W. W. Norton.

Chicago

Freud Sigmund, Gay Peter, Riviere Joan and Strachey James. 1989. The Ego and the Id. New York: W. W. Norton.

Harvard

Freud S., Gay P., Riviere J. and Strachey J. (1989). The Ego and the Id. New York: W. W. Norton.

MLA

Freud Sigmund, Gay Peter, Riviere Joan and Strachey James. The Ego and the Id. New York: W. W. Norton. 1989.