- Learn Spanish Easily, Effectively, and Fluently · 2008年
- Learn Thai - Easily, Effectively, and Fluently · 2009年
- Learn Russian Fluently, Easily and Effectively · 2012年
- Learn French Easily, Effectively, and Fluently · 2008年
- Learn French Easily, Effectively, and Fluently · 2008年
- Learn Hebrew - Easily, Effectively, and Fluently · 2009年
- Learn Thai - Easily, Effectively, and Fluently · 2009年
- Learn Thai - Easily, Effectively, and Fluently · 2009年
- Learn Czech Easily, Effectively, and Fluently · 2012年
- Learn Czech Easily, Effectively, and Fluently · 2012年
- Learn Czech Easily, Effectively, and Fluently · 2012年
- Learn Czech Easily, Effectively, and Fluently · 2012年
- Learn Czech Easily, Effectively, and Fluently · 2012年