McIntosh, Perry, author
[American Management Association;, ], 2008
eBooks
Devito, Joseph A., author
Harper and Row, 1990
Buku Teks
Koprowska, Juliet, author
Learning, Matters, 2005
Buku Teks
Koprowska, Juliet, author
Learning Matters, 2007
Buku Teks
Koprowska, Juliet, author
Learning Matters, 2008
Buku Teks