Pareto, Vilfredo, author
Frederick A. Praeger, 1966
Buku Teks
Ritzer, George, author
McGraw-Hill, 2012
Buku Teks
edited by Kenneth Thomson and Jeremy Tunstall
Penguin Books, 1983
Buku Teks
Hongkong Polytechnic International
Hongkong Polytechnic International, 2011
Buku Referensi
Brucker, Peter, author
[Springer, ], 2012
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