Robert A Denemark, Barry K Gills, George Modelski, & Jonathan Friedman. (2000). World system history: The social science of long-term change. Routledge.
Chicago Edition CitationRobert A Denemark, Barry K Gills, George Modelski, and Jonathan Friedman. World System History: The Social Science of Long-term Change. London: Routledge, 2000.
MLA Edition CitationRobert A Denemark, et al. World System History: The Social Science of Long-term Change. Routledge, 2000.
Warning: These citations may not always be 100% accurate.