Walton, Donald
Are you communicating?: you can't manage without it
McGraw-Hill , 1989
 Buku Teks SO
Kreller, Susan
You can't see the elephants
Putnam's Sons, an imprint of Penguin Group , 2015
 Buku Teks
Cleary, Jon
You can't see round corners
Collins Publishers Australia, 1947
 Buku Teks
Nicholson, John
How do you manage
BBC Books , 1992
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The Cultural economy
Helmut Anheier, Yudhishthir Raj Isar, editor
SAGE Publications, 2008
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