Havelock, Ronald G., author
Center for Research on Utilization of Scientific Knowledge, University of Michigan, 1971
Buku Teks
BHatt, V.V.
Washington, D.C. The World Bank 1989,
Buku Teks
Lisa Haneberg, editor
American Society for Training & Development, 2012
eBooks
Library Association , 1996
Buku Teks
Anne Mc Kee
Springer, 2012
eBooks