Butow, Eric, author
QUE Publishers, 2010
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Wayland, Robert E
Harvard Business School Press, 1997
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Gallagher, Richard S., author
American Management Association, 2006
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Fakhri Rachman, author
Fakultas Ilmu Keperawatan Universitas Indonesia, 2020
UI - Skripsi Membership
Capra, Fritjof, author
Harper Collins, 2002
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