Taagepera, Rein. Size and Duration of Empires: Growth-Decline Curves, 600 B.C. to 600 A.D.. Social Science History (Duke University Press). 1979, 3 (3/4): 125. ISSN 0145-5532. JSTOR 1170959. doi:10.2307/1170959.
Ian Morris. Essay Writer. [2022-08-03]. (原始内容存档于2022-11-29) (英语).
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Taagepera, Rein. Size and Duration of Empires: Growth-Decline Curves, 600 B.C. to 600 A.D.. Social Science History (Duke University Press). 1979, 3 (3/4): 125. ISSN 0145-5532. JSTOR 1170959. doi:10.2307/1170959.
Taagepera, Rein. Size and Duration of Empires: Growth-Decline Curves, 600 B.C. to 600 A.D.. Social Science History (Duke University Press). 1979, 3 (3/4): 125. ISSN 0145-5532. JSTOR 1170959. doi:10.2307/1170959.