Landy, Frank J., author
Wiley, 2013
Buku Teks
Bobko, Philip, author
McGraw-Hill, 1995
Buku Teks
Riggio, Ronald E., author
Pearson, 2013
Buku Teks
Maria C.W. Peeters, Jan de Jonge and Toon W. Taris, editors
Wiley-Blackwell, 2014
Buku Teks
Riggio, Ronald E., author
Pearson, 2009
Buku Teks