@article{Wagar_1997, title={Review of "Civilizations and World Systems: Studying World-Historical Change" by Stephen K. Sandersen, ed. }, volume={3}, url={http://jwsr.pitt.edu/ojs/jwsr/article/view/116}, DOI={10.5195/jwsr.1997.116}, number={1}, journal={Journal of World-Systems Research}, author={Wagar, W. Warren}, year={1997}, month={Feb.}, pages={230–235} }