| Systems and procedures | Prentice Hall | Tiada | 1959 | |
| Systems analysis for librarians and information professionals | | Tiada | 1994 | 1563082756 |
| Systems analusis for librarians and information professionals | Eastern Universities Press | Tiada | 1983 | 9679080110 |
| Microprocessor systems design | PWS Kent Publishing Company | Tiada | | |
| Prosodic systems and intonation in English | Cambridge University Press | Tiada | 1969 | 0 521 29058 9 |
| Operating systems: design and implementation | Prentice Hall | Tiada | 1987 | 0-13-630195-9 |
| Information systems | John Wiley & Sons | Tiada | 1990 | 0471603023 |
| Signals & systems | Prentice Hall | Tiada | 1997 | 0-13-651175-9 |
| Writing systems of the world | Charles E. Tuttle Company | Tiada | 1988 | |
| Economic systems | Oxford & IBH Publishing | Tiada | 1965 | |