Chacholiades, Miltiades, author
McGraw-Hill, 1978
Buku Teks
Umit Hacioglu, Hasan Dinçer, editors
IGI Global, 2014
Buku Teks
Swanson, Timothy M., author
Macmillan, 1994
Buku Teks
Watt, Kenneth E.F., 1929-
Allyn and Bacon, 1982
Buku Teks
Schiavo-Campo, Salvatore
Winthrop Publishers, Inc., 1978
Buku Teks