Belden, Robert C., and Michael R. Pelton. "Wallows of the European Wild Hog in the Mountains of East Tennessee." Journal of the Tennessee Academy of Science 51, no. 3 (1976): 91-93.

Belden, Robert C., and Michael R. Pelton. "European Wild Hog Rooting in the Mountains of East Tennessee." Proceedings of the Annual Conference of the Southeastern Association of Game and Fish Commissioners 29 (1975): 665-671.

Belden, Robert C.. Rooting and Wallowing Activities of the European Wild Hog (Sus scrofa) in the Mountains of East Tennessee. Vol. Master of Science. Knoxville, Tenn.: The University of Tennessee, 1972.