Brumbaugh, R. S. (1992). Western philosophic systems and their cyclic transformations. Southern Illinois Univ. Press.
Chicago-Zitierstil (17. Ausg.)Brumbaugh, Robert Sherrick. Western Philosophic Systems and Their Cyclic Transformations. Carbondale u.a: Southern Illinois Univ. Press, 1992.
MLA-Zitierstil (9. Ausg.)Brumbaugh, Robert Sherrick. Western Philosophic Systems and Their Cyclic Transformations. Southern Illinois Univ. Press, 1992.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.