Principles of Communism, Frederick Engels, 1847, Section 18. "Finally, when all capital, all production, all exchange have been brought together in the hands of the nation, private property will disappear of its own accord, money will become superfluous, and production will so expand and man so change that society will be able to slough off whatever of its old economic habits may remain." نسخة محفوظة 02 يناير 2018 على موقع واي باك مشين.
"Communism". Britannica Encyclopedia. مؤرشف من الأصل في 2015-06-09.
Principles of Communism, Frederick Engels, 1847, Section 18. "Finally, when all capital, all production, all exchange have been brought together in the hands of the nation, private property will disappear of its own accord, money will become superfluous, and production will so expand and man so change that society will be able to slough off whatever of its old economic habits may remain." نسخة محفوظة 02 يناير 2018 على موقع واي باك مشين.
