APA

University of Minnesota, . (1988). University of Minnesota : Graduate School. Minneapolis: University of Minnesota.

Chicago

University of Minnesota, . 1988. University of Minnesota : Graduate School. Minneapolis: University of Minnesota.

Harvard

University of Minnesota, . (1988). University of Minnesota : Graduate School. Minneapolis: University of Minnesota.

MLA

University of Minnesota, . University of Minnesota : Graduate School. Minneapolis: University of Minnesota. 1988.