1. Bellamy, E. (1995[1888]). Looking backward: 2000–1887. Boston: Bedford Books.
2. Cabet, E. (2003[1840]). Travels in Icaria. Syracuse: Syracuse University Press.
3. Campanella, T. (1988[1623]). City of the sun. In Henry Morely, Ideal Commonwealths.
4. Engels, F. (1975[1845]). Karl Marx Frederick Engels collected works (hereafter MECW), Vol. 4. Moscow: Progress. The Holy Family.
5. Engels, F. (1987[1878]). MECW, Vol. 25. Moscow: Progress. Anti-Dühring.