Marrou, H. I., & Olsen, R. J. (1966). The meaning of history. Helicon.
Cita Chicago Style (17a ed.)Marrou, Henri Irénée, y Robert J. Olsen. The Meaning of History. Baltimore: Helicon, 1966.
Cita MLA (9a ed.)Marrou, Henri Irénée, y Robert J. Olsen. The Meaning of History. Helicon, 1966.
Precaución: Estas citas no son 100% exactas.