APA (7. basım) Alıntı
Kagan, D. (1962). Decline and fall of the Roman Empire: why did it collapse?.: Why did it collapse? Heath.
Chicago Style (17. basım) Atıf
Kagan, Donald. Decline and Fall of the Roman Empire: Why Did It Collapse?.: Why Did It Collapse? Boston: Heath, 1962.
MLA (9th ed.) Atıf
Kagan, Donald. Decline and Fall of the Roman Empire: Why Did It Collapse?.: Why Did It Collapse? Heath, 1962.
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