Crater, Glenn. "The effect of different forms of nitrogen on growth, nitrogen content, stem strength, and keeping quality of the standard chrysanthemum (Chrysanthemum morifolium, Ramat) ʻGiant #4 Indianapolis White' /." Doctoral dissertation, Ohio State University, 1973. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486744174938315Chicago Manual of Style (17th edition)