De Cenzo, David A., author
John Wiley & Sons, 2002
Buku Teks
Knudson, Harry R.
McGraw-Hill Kogakusha, 1979
Buku Teks
Hitt, Michael A., author
West Publishing Company, 1989
Buku Teks
Tosdal, Harry R.
McGraw-Hill Book Co., Inc, 1950
Buku Teks
Levin, Richard I., author
McGraw-Hill International Book Company, 1982
Buku Teks