Levis earned a bachelor's degree from Fresno State College in 1968, a master's degree from Syracuse University in 1970, and a Ph.D. from the University of Iowa in 1974.
Levis earned a bachelor's degree from Fresno State College in 1968 in 1974. Levis earned a bachelor's degree from a master's degree from Syracuse University in 1970 in 1974. Levis earned a bachelor's degree from a Ph.D. from the University of Iowa in 1974.