North of the DMZ: Essays on Daily Life in North Korea
Andrei Lankov
Grammar of Spoken and Written English
Geoffrey Leech & Douglas Biber & Susan Conrad & Stig Johansson & Edward Finegan
单词的历史：英语词源漫谈
马丁· H · 曼瑟 (Martin H. Manser)
教师效能训练
托马斯•戈登
Check your vocabulary for academic English
David Porter