(1971). Socialism and capitalism: Score and prospects. Progress.
Chicago Style (17. basım) AtıfSocialism and Capitalism: Score and Prospects. Moscow: Progress, 1971.
MLA (9th ed.) AtıfSocialism and Capitalism: Score and Prospects. Progress, 1971.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..