Singer, P. (2018). Marx: A Very Short Introduction (2nd.). Oxford.
Chicago-čujuhus (17. p.)Singer, Peter. Marx: A Very Short Introduction. 2nd. Oxford, 2018.
MLA-čujuhus (9. p.)Singer, Peter. Marx: A Very Short Introduction. 2nd. Oxford, 2018.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.