Владимир Лењин — разлика између измена

* {{Cite book| ref=harv| last=Phillips| first = Steve| title = Lenin and the Russian Revolution| url = https://books.google.com/books?id=_na0zfdhKQMC&pg=PA90|year=2000| publisher = Heinemann|isbn=978-0-435-32719-4|pages=90}}