| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Chorion Villus Sampling: Betapal | 978-0-412-30051-6 (0-412-30051-6) | 1987 | D. Liu |
| Chorion Villus Sampling: Umatpal | 978-0-412-30052-3 (0-412-30052-4) | 1987 | Nottingham Audio Visual Unit of Queen's Medical Centre ยท D.T.Y. Liu |
| Chorion Villus Sampling Videotape | 978-0-412-30050-9 (0-412-30050-8) | 1987 | D. Liu |