This is a personal project by @dellsystem. I built this to help me retain information from the books I'm reading.
Source code on GitHub (MIT license).
Marcy, S. (1988). Black Labor From Chattel Slavery To Wage Slavery. In Marcy, S. High Tech, Low Pay: a Marxist Analysis of the Changing Character of the Working Class. Ww Pub, pp. 55-80