Complex sentence: Luthans graduated from the University of Iowa with a B.A. in mathematics in 1961, and then obtained his MBA in 1962, and Ph.D. in management and social psychology in 1965, also from Iowa.
Split into simpler sentences: Luthans graduated from the University of Iowa with a B.A. in mathematics in 1961. He obtained an MBA in 1962, and a Ph.D. in management and social psychology in 1965, also from Iowa.