Bruce, R. V. (1989). The shadow of a coming war. Gettysburg College.
Chicago-čujuhus (17. p.)Bruce, Robert V. The Shadow of a Coming War. Gettysburg: Gettysburg College, 1989.
MLA-čujuhus (9. p.)Bruce, Robert V. The Shadow of a Coming War. Gettysburg College, 1989.
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