https://en.wikipedia.org/wiki/Key_events_of_the_20th_century#The_Russian_Revolution_and_Communism

Footnote 19: https://scholarworks.gvsu.edu/cgi/viewcontent.cgi?article=1169&context=honorsprojects

The whole section of the Wiki article is regurgitated bad history, but citing a literal rando is low even for Wikipedia