This guide has been compiled as a starting point for students in Prof. Schmalzer's course on Twentieth Century China. The resources suggested are good places to start, but don't feel like you are limited to using these tools. Browsing through the library shelves, looking at runs of particular journals, and talking to friends over a cup of tea can also lead you down some very interesting paths.
Good luck, happy hunting and don't be afraid to ask for help when you feel stuck.
Sharon the Librarian