Practice Makes Perfect (2004–2014)
- Practice Makes Perfect (2004)
- Practice Makes Perfect (2006)
- Practice Makes Perfect (2006)
- Practice Makes Perfect (2007)
- Practice Makes Perfect (2008)
- Practice Makes Perfect (2008)
- Practice Makes Perfect: Advanced French Grammar (2008)
- Practice Makes Perfect (2009)
- Practice Makes Perfect Italian Sentence Builder (2009)
- Practice Makes Perfect Spanish Sentence Builder (2009)
- Practice Makes Perfect (2011)
- Practice Makes Perfect Complete Japanese Grammar (2014)