Larry Israelite, editor
American Society for Training & Development, 2006
eBooks
Shacford, R.H., author
Public Affairs Press, 1952
Buku Teks
Ploscowe, Morris, author
Hawthorn Books, 1955
Buku Teks
tranlated from the Russion by H. Chizhevsky
Progress Publishers, 1977
Buku Teks
Sutherland, John A.
Athlone Press, 1978
Buku Teks