McLellan, D. (1986). Marx. Fontana Press.
Lua i Stíl Chicago (17ú heag.)McLellan, David. Marx. London: Fontana Press, 1986.
Lua MLA (9ú heag.)McLellan, David. Marx. Fontana Press, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.