Becker, Brian E., author
Harvard Bussines School Press, 2001
Buku Teks
Labovitz, George, author
McGraw-Hill, 2012
Buku Teks
Reddington, Martin, author
Elseifer, 2005
Buku Teks
SHRM, 2008
Buku Teks
Lovelock, Christopher H., author
Pearson Education , 2011
Buku Teks