* The Grey Book (2006)
* The Red Book (2007)
* The Black Book (2008)
* The Green Book (2009)
* The White Book (2010)
* The Blue Book (2011)
* The Yellow Book (2012)
* The Orange Book (2013)
* The Purple Book (2014)
* The Brown Book (2015)
* The Silver Book (2016)
* The Gold Book (2017)
* The Diamond Book (2018)
* The Ruby Book (2019)
* The Emerald Book (2020)
* The Sapphire Book (2021)
* The Amethyst Book (2022)
Μη μυθοπλασία
* The Art of Writing (2014)
* The Business of Writing (2015)
* The Future of Writing (2016)
* The Psychology of Writing (2017)
* The Science of Writing (2018)