APA (7th ed.) Zitazioa

HOBSON, J. A. (1968). Imperialism: A study. Allen & Unwin.

Chicago Style (17th ed.) Zitazioa

HOBSON, J. A. Imperialism: A Study. London: Allen & Unwin, 1968.

MLA (9th ed.) Zitazioa

HOBSON, J. A. Imperialism: A Study. Allen & Unwin, 1968.