Steenbrink, Karel A., translator
KITL Press, 2007
Buku Teks
Cavanaugh, Francis X.
Boston Harvard business school press 1996,
Buku Teks
Anderson, Francis M.
Ransdell Incorporated Publishers, 1939
Buku Teks
James, Francis Edmund Skone
Sweet & Maxwell, 1958
Buku Teks
Curran, Charles A.
Grune & Stratton, 1972
Buku Teks