| Linguistic diversity and national unity | The University of Chicago Press | Tiada | 1994 | 0-226-76289-0 |
| Linguistic diversity | Oxford University Press | Tiada | 1999 | 0-19-823858-4 |
| Animal diversity | Dewan Bahasa dan Pustaka (Terbitan) | Tiada | | |
| Unity and diversity in language use | Continuum | Tiada | 2002 | 0-8264-7874-3 |
| Perspectives in diversity:collection of essays,critiques and research articles | | Tiada | 2007 | 978-981-05-9060-4 |
| Uniformity and diversity in language policy | Multilingual Matters | Tiada | 2011 | 978-1-84769-445-4 |
| Unity in diversity | Foris Publications | Tiada | 1984 | 90-6765-063-3 |
| The phonological diversity of the Malay dialects | Dewan Bahasa dan Pustaka (Terbitan) | Tiada | 1991 | 983-62-1827-0 |
| Divinity and diversity | Institute of Southeast Asian Studies | Tiada | 2007 | 9789812307408 |
| The phonological diversity of the Malay dialects | Dewan Bahasa dan Pustaka (Terbitan) | Tiada | 1977 | 983-62-1827-0 |