Bruce, R. V. (1989). The shadow of a coming war. Gettysburg College.
Chicagoスタイル(17版)引用形式Bruce, Robert V. The Shadow of a Coming War. Gettysburg: Gettysburg College, 1989.
MLA(9版)引用形式Bruce, Robert V. The Shadow of a Coming War. Gettysburg College, 1989.
警告: この引用は必ずしも正確ではありません.