- eBookChinese Flash Cards Kit Ebook Volume 1Philip Yungkin Lee
- eBook250 Essential Chinese Characters Volume 2Philip Yungkin Lee
- eBookChinese Flash Cards Kit Ebook Volume 2Philip Yungkin Lee
- eBookChinese Flash Cards Volume 3Philip Yungkin Lee
- eBookEssential ChinesePhilip Yungkin Lee
- eBookPeriplus Pocket Mandarin Chinese DictionaryPhilip Yungkin Lee