Redmond, Peter W. D., author
The M & E Handbook Series, 1993
Buku Teks
Daniels, Kathy, author
Chartered Institute of Personnel and Development, 2012
Buku Teks
Presser, Stephen B., author
Thomson/West, 2010
Buku Teks
Madura, Jeff, author
South-Western College, 2001
Buku Teks
Cunningham, William H., author
South-Western, 1984
Buku Teks