Hobbs, Thomas. "Soybean Dieback Caused by Diaporthe Phaseolorum Var. Caulivora and Some Factors Affecting Incidence of Diaporthe and Phomopsis Species in Field-Grown Soybeans." Master's thesis, Ohio State University, 1980. http://rave.ohiolink.edu/etdc/view?acc_num=osu1392971380Chicago Manual of Style (17th edition)