Bwalya, Kelvin Joseph, editor
Chandos, 2014
eBooks
Jung, Claude
Payot, 1949
Buku Klasik
Taub, Alexander, author
McGraw-Hill Education, 2014
Buku Teks
Glueck, William F., author
McGraw-Hill, 1972
Buku Teks
Phillips, Patricia Pulliam, author
American Society for Training & Development, 2012
eBooks