| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| 100 STANDARD FORMULAE IN MATHEMATICS: FOR JUNIOR SECONDARY/JUNIOR HIGH SCHOOLS | 978-1-6864-7736-2 (1-6864-7736-8) | 2019 |
| 100 STANDARD FORMULAE IN MATHEMATICS : FOR SENIOR SECONDARY/SENIOR HIGH SCHOOLS | 978-1-6870-8774-4 (1-6870-8774-1) | 2019 |