| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Business Essentials: Book 1 | 978-0-07-452915-7 | 1992 | |
| Business Essentials. Part One | 978-0-07-451034-6 | 1982 | |
| Business Essentials. Part Two | 978-0-07-451035-3 | 1982 | |
| Elementary Office Practice | 978-0-07-093249-4 | 1975 | Maurice Watcham |