Dray, W. H. (1964). Philosophy of history. Prentice-Hall.
Cita Chicago Style (17a ed.)Dray, William H. Philosophy of History. Englewood Cliffs, New Jersey: Prentice-Hall, 1964.
Cita MLA (9a ed.)Dray, William H. Philosophy of History. Prentice-Hall, 1964.
Precaución: Estas citas no son 100% exactas.