Ulmer Donna. (2006). Computer Accounting with QuickBooks Pro 2007. New York: McGraw-Hill/Irwin.
Chicago Style aipamenaUlmer Donna. Computer Accounting With QuickBooks Pro 2007. New York: McGraw-Hill/Irwin, 2006.
MLA aipamenaUlmer Donna. Computer Accounting With QuickBooks Pro 2007. New York: McGraw-Hill/Irwin, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.