Barkan, E. (1992). Retreat of scientific racism: Changing concepts of race in Britain and the United States between the world wars. Cambridge University Press.
Цитирование в стиле Чикаго (17-е изд.)Barkan, Elazar. Retreat of Scientific Racism: Changing Concepts of Race in Britain and the United States Between the World Wars. Cambridge University Press, 1992.
Цитирование MLA (9-е изд.)Barkan, Elazar. Retreat of Scientific Racism: Changing Concepts of Race in Britain and the United States Between the World Wars. Cambridge University Press, 1992.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.