Abe, Kobo
University of Tokyo Press, 1975
Buku Teks
Park, Seon-Yeong
1n1books, 2007
Buku Teks
Kalat, James W.
Langara College, 2016
Buku Teks
Carnes, Barbara
American Society for Training & Development, 2012
eBooks
Woolfolk, Anita E.
Allyn and Bacon , 1995
Buku Teks