KAGAN, D. (1962). Decline and fall of the Roman empire: Why did it collapse? D.C. Heath.
Chicagoスタイル(17版)引用形式KAGAN, Donald. Decline and Fall of the Roman Empire: Why Did It Collapse? Boston: D.C. Heath, 1962.
MLA(9版)引用形式KAGAN, Donald. Decline and Fall of the Roman Empire: Why Did It Collapse? D.C. Heath, 1962.
警告: この引用は必ずしも正確ではありません.