Stillman, William
Jossey-Bass, 2009
Buku Teks
Murray, Rowena
Open University Press, 2003
Buku Teks
Hand, Amy
American Society for Training & Development, 2010
eBooks
edited by C.J. Armstrong and J.A. Large
Gower, 1988
Buku Referensi
edited by C.J. Armstrong and J.A. Large
Ashgate, 1992
Buku Referensi