editor, Kanishka Jayasuriya
Routledge , 2008
Buku Teks
Goleman, Daniel, author
Bantam Books, 2006
Buku Teks
MacKuen, Michael Bruce
Sage, 1981
Buku Teks
Orchard, W. Arundel
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Buku Teks
Goleman, Daniel, author
Bantam books, 2006
Buku Teks