Wilson, William. "Viability, development, and rate of passage of the pathogenic bacterium, Bacillus larvae white, in the hemolymph and alimentary canal of the adult honey bee, Apis mellifera L. /." Doctoral dissertation, Ohio State University, 1967. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486645068465205Chicago Manual of Style (17th edition)