Jungk, R. (1969). Mankind 2000. London: Allen and Unwin.
Trích dẫn kiểu ChicagoJungk, Robert. Mankind 2000. London: Allen and Unwin, 1969.
MLA引文Jungk, Robert. Mankind 2000. London: Allen and Unwin, 1969.
警告：這些引文格式不一定是100％准確.
APA引文