Gup, Benton E., author
Irwin, 1996
Buku Referensi
Gup, Benton E., author
Bankers Publication , 1990
Buku Teks
Gup, Benton E., author
John Wiley , 1979
Buku Teks
Henderson, Glenn V., author
Addison-Wesley, 1984
Buku Teks
Riggs, James L., author
McGraw-Hill, 1974
Buku Teks