Hamblin, A. C.
McGraw-Hill , 1974
Buku Teks
Anisa Wulandari S., author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2012
UI - Skripsi (Open)
Levine, Charles I., author
American Society for Training and Development Press, 2001
eBooks
Furi Andriyana, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2012
UI - Skripsi Open
Noe, Raymond A., author
McGraw-Hill, 2010
Buku Teks