| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2016 | 978-1-946170-03-3 | Gordon (Guoping) Feng · Wendy (Wenlei) Hao · Mark Davies | Core Vocabulary of English: 4,000 Upper-intermediate Words (Step by Step Towards Core Vocabulary of English) |
| '' | 978-1-946170-04-0 | Gordon (Guoping) Feng · Wendy (Wenlei) Hao · Mark Davies | Core Vocabulary of Contemporary English: 6,000 Advanced Words (Step by Step Towards Core Vocabulary of English) |