W. Burkholder
Krischik, V.A., and W. Burkholder. 1992. “Stored-Product Insects and Biological Control Agents”. In V. A. Krischik, G. Cuperus, D. Galliart, and M. Stone-Cooper (eds.). Management of Grain, Bulk Commodities, and Bagged Products, 99-105. Oklahoma State University.