Vassiliev, M. (1960). Life in the twenty- first century. London: A Penguin Special.
Trích dẫn kiểu ChicagoVassiliev, M. Life in the Twenty- First Century. London: A Penguin Special, 1960.
MLA引文Vassiliev, M. Life in the Twenty- First Century. London: A Penguin Special, 1960.
警告：這些引文格式不一定是100％准確.