Costantino, Cathy A.
Jossey-Bass, 1996
Buku Teks
Condliffe, Peter
Tape Publications, 1991
Buku Teks
Condliffe, Peter
Lexis lexis, 2012
Buku Teks
Sheftel, Phoebe A.
[American Society for Training & Development Press, American Society for Training & Development Press], 2001
eBooks
Tjosvold, Dean
Addison-Wesley Pub. Co, 1991
Buku Teks