Clark, Peter
Organizational innovations
Sage, 2003
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Rogers, Everett M.
Diffusion of innovations
Free Press, 1969
 Buku Teks SO
Rogers, Everett M.
Diffusion of innovations
The Free Press, 1995
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Rogers, Everett M.
Diffusion of innovations
The Free Press, 1983
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Watson, Jeanne C.
Case studies in emotion-focused treatment of depression : a comparison of good and poor outcome
American Psychological Association, 2007
 Buku Teks SO