| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Hakka Dialect: A Linguistic Study of its Phonology, Syntax and Lexicon | 978-0-521-13367-8 (0-521-13367-X) | 2010 |
| The Hakka Dialect. A Linguistic Study of its Phonology, Syntax, and Lexicon. | 978-0-521-20037-0 (0-521-20037-7) | 1973 |