Hebda, Patricia. "A study of the guanosine-5'-diphosphate-α-D-mannose : guanosine5'-diphosphate-β-L-galactose epimerase of the green alga Chlorella pyrenoidosa /." Doctoral dissertation, Ohio State University, 1978. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487080007254905Chicago Manual of Style (17th edition)