Παραπομπή APA

Sigmund, F. (1985). Civilization, society and religion. Penguin books.

Παραπομπή Chicago Style

Sigmund, Freud. Civilization, Society and Religion. Penguin books, 1985.

Παραπομπή MLA

Sigmund, Freud. Civilization, Society and Religion. Penguin books, 1985.