| Progress in documentation | Aslib | Tiada | 1981 | 0-85142-140-7 |
| Progress in linguistics: a collection of papers | Mouton | Tiada | 1970 | |
| Progress report on the development plan of the federation of Malaya 1950 - 1952 | | Tiada | 1953 | |
| Progress for a small planet | Peguin Books | Tiada | 1979 | 0-1402-2255-3 |
| Progress in language planning | Moutoer | Tiada | 1983 | |
| Sarawak: Development Progress 1964- 1967 | Sarawak Government Printing | Tiada | 1968 | |
| Language change: progress or decay? | Cambridge University Press | Tiada | 2013 | 978-1-107-67892-7 |
| Abai | Progress Publishers | Tiada | 1975 | |
| Fortitude | Progress Publishers | Tiada | 1975 | |
| Stories | Progress Publishers | Tiada | 1971 | |