Cita APA (7a ed.)

Hobson, J. A., & Siegelman, P. (1971). Imperialism: A study. University of Michigan Press.

Cita Chicago Style (17a ed.)

Hobson, J. A., y Philip Siegelman. Imperialism: A Study. Ann Arbor: University of Michigan Press, 1971.

Cita MLA (9a ed.)

Hobson, J. A., y Philip Siegelman. Imperialism: A Study. University of Michigan Press, 1971.