edited by A. James
John Wiley & Sons, 1984
Buku Teks
Alley, E. Roberts
Mcgraw-Hill, 2000
Buku Referensi
Chapra, Steven C.
McGraw-Hill, 1997
Buku Teks
edited by A. James
John Wiley & Sons, 1993
Buku Teks
edited, A. James, Lilian Evison
John Wiley & Sons, 1979
Buku Teks