Kececioglu, Dimitri
Prentice-Hall, 1991
Buku Referensi
Shoman, Martin L.
McGraw-Hill, 1983
Buku Teks
Ettouney, Mohammed M.
CRC Pres, 2012
Buku Teks
Smith, Charles O.
Tokyo: McGraw-Hill Kogakusha, 1976
Buku Teks
John E. Ullmann, editor, Donald A. Christman, Bert Holtje, associate editors.
John Wiley & Sons, 1986
Buku Referensi