ebrary, Inc, Schneider, D., & Lilienfeld, D. E. (2011). Twentieth century challenges. Rutgers University Press.
Chicago Style (17th ed.) Citationebrary, Inc, Dona Schneider, and David E. Lilienfeld. Twentieth Century Challenges. New Brunswick, N.J.: Rutgers University Press, 2011.
MLA (9th ed.) Citationebrary, Inc, et al. Twentieth Century Challenges. Rutgers University Press, 2011.
Warning: These citations may not always be 100% accurate.