Duncan, W. Jack, author
Blackwell, 1999
Buku Teks
Duncan, W. Jack, author
Blackwell, 1995
Buku Teks
Ginter, Peter M., author
Jossey-Bass, 2014
Buku Teks
Ginter, Peter M., author
Wiley, Hoboken, NJ., 2018
Buku Teks
Pynes, Joan, author
Jossey-Bass, 2011
Buku Teks