Cita APA (7a ed.)

Koebner, R., & Schmidt, H. D. (1964). Imperialism: The Story and significance of a political word, 1840-1960. Cambridge University.

Cita Chicago Style (17a ed.)

Koebner, Richard, y Helmut Dan Schmidt. Imperialism: The Story and Significance of a Political Word, 1840-1960. Cambridge: Cambridge University, 1964.

Cita MLA (9a ed.)

Koebner, Richard, y Helmut Dan Schmidt. Imperialism: The Story and Significance of a Political Word, 1840-1960. Cambridge University, 1964.