Cita APA
Thornton, A. P. (1977). Imperialism in the twentieth century. University of Minnesota Press.
Citación estilo Chicago
Thornton, A. P. Imperialism in the Twentieth Century. Minneapolis: University of Minnesota Press, 1977.
Cita MLA
Thornton, A. P. Imperialism in the Twentieth Century. University of Minnesota Press, 1977.
Warning: These citations may not always be 100% accurate.