Nasir Tamara
KPG (Kepustakaan Populer Gramedia), 2017
Buku Teks
Fuller, Lon L.
Penguin Books, 1971
Buku Teks
Fuller, Gordon
McGraw-Hill, 1972
Buku Teks
Wallerstein, Immanuel, author
Cambridge University Press, 1991
Buku Teks
Rosenberg, Michael, author
Emerald, 2017
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