White, Gerald I., author
John Wiley & Sons, 1994
Buku Teks
Hills, George S., author
Garland Pubishing, 1982
Buku Teks
Hammill, A.E., author
Institute of Chatered Accountants, 1979
Buku Teks
Fraser, Lyn M., author
Prentice-Hall International, 1995
Buku Teks
Fraser, Lyn M., author
Prentice-Hall, 1998
Buku Teks