| Definition | Oxford at the Clarendon Press | Tiada | 1954 | |
| Concept-term-definition and their significance in international communication | | Tiada | 19?? | |
| Essays on definition | John Benjamins Publishing | Tiada | 2000 | 90-272-2327-0 |
| Preliminary thoughts on the nature of knowledge and the definition and aims of education | | Tiada | 1977 | |