Kooistra, John. "The effect of chlortetracycline, alpha picolinic acid, and versene on growth and sporulation of Clostridium roseum, and studies on suppression of the activity of chlortetracycline by tungstate/." Doctoral dissertation, Ohio State University, 1961. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486482884006889Chicago Manual of Style (17th edition)