| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Character Text for Speak Cantonese | 978-0-88710-009-3 (0-88710-009-0) | 1975 | Loretta R.Q. Pan |
| Speak Cantonese, Book One: Revised Edition | 978-0-88710-094-9 (0-88710-094-5) | 1999 | Parker Po-fei Huang |
G. K. · G KOK · G. P. · Gerard Kok · P.K.