Παραπομπή APA

Ofstad, H. (1961). An inquiry into the freedom of decision. George Allen & Unwin.

Παραπομπή Chicago Style

Ofstad, Harald. An Inquiry into the Freedom of Decision. London: George Allen & Unwin, 1961.

Παραπομπή MLA

Ofstad, Harald. An Inquiry into the Freedom of Decision. George Allen & Unwin, 1961.