Howard, M. C., & King, J. E. (1985). The political economy of Marx (2nd ed.). Longman.
Παραπομπή σε μορφή Chicago (17η εκδ.)Howard, Michael Charles, και J. E. King. The Political Economy of Marx. 2nd ed. London ; New York: Longman, 1985.
Παραπομπή σε μορφή MLA (9th εκδ.)Howard, Michael Charles, και J. E. King. The Political Economy of Marx. 2nd ed. Longman, 1985.