Drooyan, Irving
Elementary algebra : structure and skills
John Wiley & Sons, 1981
 Buku Teks
Skills to make a librarian: transferable skills inside and outside the library
edited by Dawn Lowe–Wincentsen
Chandos, 2015
 eBooks
Naylor, Thomas H.
Managerial economics : corporate economics and strategy
McGraw-Hill , 1983
 Buku Teks
Badawy, Michael K.
Developing managerial skills in engineers and scientists/Michael K Badawy
Van Nostrand Reinhold, ,1995
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Whisler, Thomas L.
The rules of the game : inside the corporate board room /Thomas L. Whisler.
Dow Jones-Irwin, 1984
 Buku Teks