| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Portfolio of Accounting Systems for Small and Medium-Sized Businesses | 978-0-13-012832-4 (0-13-012832-5) | 1993 |
| Portfolio of accounting systems for small and medium-sized businesses | 978-0-13-685305-3 (0-13-685305-6) | 1977 |