Vaske, M. O. (1980). A philosophy of morality. Creighton University Press.
Cita Chicago Style (17a ed.)Vaske, Martin O. A Philosophy of Morality. Omaha: Creighton University Press, 1980.
Cita MLA (9a ed.)Vaske, Martin O. A Philosophy of Morality. Creighton University Press, 1980.
Precaución: Estas citas no son 100% exactas.