You can find the document by searching for the title on the Central Intelligence Agency Freedom of Information Act Reading Room website https://www.cia.gov/readingroom/home. It should also be visible here https://www.cia.gov/readingroom/docs/CIA-RDP85T00287R000100490001-9.pdf
For more declassified CIA documents about Socialism see the blog https://socialism-declassified.weebly.com/blog/april-05th-2024