Παραπομπή APA

Bergson,Abram. (1978). Productivity and the social system-the USSR and the WEST. Harvard University Press.

Παραπομπή Chicago Style

Bergson,Abram. Productivity and the Social System-the USSR and the WEST. London: Harvard University Press, 1978.

Παραπομπή MLA

Bergson,Abram. Productivity and the Social System-the USSR and the WEST. Harvard University Press, 1978.