M. H. · Min-H · Min Hong · Yu Hong
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| TOEFL Vocabulary-Word Root+Associative Memory-Portable Edition | 978-7-5619-2970-4 (7-5619-2970-6) | 2011 |
| TOEFL word root + Associative Memory: Michael Yu 118 | 978-7-5605-5512-6 (7-5605-5512-8) | 2013 |