Barkan, E. (1992). The retreat of scientific racism: Changing concepts of race in Britain and the United Stats between the world wars ([1st. pub.].). Cambridge University Press.
Cita Chicago Style (17a ed.)Barkan, Elazar. The Retreat of Scientific Racism: Changing Concepts of Race in Britain and the United Stats Between the World Wars. [1st. pub.]. Cambridge [etc.]: Cambridge University Press, 1992.
Cita MLA (9a ed.)Barkan, Elazar. The Retreat of Scientific Racism: Changing Concepts of Race in Britain and the United Stats Between the World Wars. [1st. pub.]. Cambridge University Press, 1992.
Precaución: Estas citas no son 100% exactas.