Axelrod, Robert M., author
Basic Books, 1984
Buku Teks
Childe, Gordon, author
Watts, 1952
Buku Teks
Parsons, Talcott, author
Prentice-Hall, 1977
Buku Teks
Kampourakis, Kostas, author
Cambridge University Press, 2014
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Luterbacher, Urs, author
Emerald, 2017
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