Doherty, Michael F., author
McGraw-Hill , 2001
Buku Teks
Hjelm, John R., author
Jones & Bartlett Learning, 2010
Buku Teks
Rigby, Paul H., author
John Wiley & Sons, 1965
Buku Teks
Lewens, Tim, author
Oxford University Press, 2015
Buku Teks
Barner, David, author
Oxford University Press, 2016
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