Ryden, K. C., & Franklin, W. (2011). Sum of the parts: The mathematics and politics of region, place, and writing. University of Iowa Press.

Ryden, Kent C., and Wayne Franklin. Sum of the Parts: The Mathematics and Politics of Region, Place, and Writing. Iowa City: University of Iowa Press, 2011.

Ryden, Kent C., and Wayne Franklin. Sum of the Parts: The Mathematics and Politics of Region, Place, and Writing. University of Iowa Press, 2011.