APA (7th ed.) Zitazioa

Bruce, R. V. (1989). The shadow of a coming war. Gettysburg College.

Chicago Style (17th ed.) Zitazioa

Bruce, Robert V. The Shadow of a Coming War. Gettysburg: Gettysburg College, 1989.

MLA (9th ed.) Zitazioa

Bruce, Robert V. The Shadow of a Coming War. Gettysburg College, 1989.