Παραπομπή APA

Fromm,Erich. (1978). To have or to be: A new blue print of mankind. Abacus.

Παραπομπή Chicago Style

Fromm,Erich. To Have or to Be: A New Blue Print of Mankind. London: Abacus, 1978.

Παραπομπή MLA

Fromm,Erich. To Have or to Be: A New Blue Print of Mankind. Abacus, 1978.