Orilia, Lawrence
Business data processing systems
John Wiley & Sons, 1972
 Buku Teks
Thierauf, Robert J.
An introduction to data processing for business
John Wiley & Sons, 1980
 Buku Teks
Orilia, Lawrence S.
Introduction to business data processing
McGraw-Hill, 1982
 Buku Teks
Awad, Elias M.
Business data processing / Elias M. Awad
Prentice/Hall International, 1980
 Buku Teks
Orilia, Lawrence
Student workbook for business data processing systems
John Wiley & Sons, 1972
 Buku Teks