Gray, Faith. "Infection of the honey bee, Apis mellifera L. (Insecta, Hymenoptera) by Nosema apis Zander (Protozoa, Cnidospora) and its relation to endocrine function /." Doctoral dissertation, Ohio State University, 1968. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486647415490001Chicago Manual of Style (17th edition)