Svoboda, J. G., & Dunning, D. G. (1978). Preliminary guide to ethnic resource materials in Great Plains repositories. Lincoln: University Libraries and Center for Great Plains Studies, University of Nebraska-Lincoln.

Svoboda, Joseph G., and David G. Dunning. Preliminary Guide to Ethnic Resource Materials in Great Plains Repositories. Lincoln: University Libraries and Center for Great Plains Studies, University of Nebraska-Lincoln, 1978.

Svoboda, Joseph G., and David G. Dunning. Preliminary Guide to Ethnic Resource Materials in Great Plains Repositories. Lincoln: University Libraries and Center for Great Plains Studies, University of Nebraska-Lincoln, 1978.