Ostrom, Elinor
Cambridge University Press , 1990
Buku Teks
edited by John K. Fairbank
Phoenix Books, 1967
Buku Teks
Greenhalgh, Christine., author
Princeton University Press, 2009
Buku Teks
Ahghari, Zohreh
Florida state university, 1991
Buku Teks
Hylton, Keith N, Author
Cambridge University Press, 2003
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