Schafer, W. J., & Riedel, J. (1973). The art of ragtime: Form and meaning of an original black American art. Baton Rouge: Louisiana State University Press.

Schafer, William John, and Johannes Riedel. The Art of Ragtime: Form and Meaning of an Original Black American Art. Baton Rouge: Louisiana State University Press, 1973.

Schafer, William John, and Johannes Riedel. The Art of Ragtime: Form and Meaning of an Original Black American Art. Baton Rouge: Louisiana State University Press, 1973.