Canter, Larry W., author
McGraw-Hill, 1977
Buku Teks
Anjaneulu, Y., author
BS Publication, 2011
Buku Teks
Anjaneyulu, Y., author
CRC Pres, 2011
Buku Teks
Wright, David
Springer, 2012
eBooks
Tobey, Deborah Davis, author
American Society for Training & Development, 2007
eBooks