Referensi
Brewer, A. (2016). Kajian Kritis Das Kapital Karl Marx (1st ed.). Narasi. https://www.goodreads.com/id/book/show/14760258-kajian-kritis-das-kapital-karl-marx
Mcllenan, D. (1976). Karl Marx. Penguin Books. https://www.biblio.com/book/karl-marx-mclellan-david/d/1437476793
Selwyn, B. (2013). Karl Marx, Class Struggle and Labour-Centred Development. Global Labour Journal, Volume 4(No 1). https://mulpress.mcmaster.ca/globallabour/article/view/1128
Suseno, F. M. (1999). Pemikiran Karl Marx: Dari Sosialisme Utopis ke Permasalahan Revisionisme. Gramedia. https://books.google.co.id/books?id=C_6Yroi1miYC&printsec=frontcover&hl=id#v=onepage&q&f=false