- Author: Ferrazzi Keith, Raz Tahl
- Language: English
- Year: 2014
- Author: Ullmen John B., Goulston Mark, Ferrazzi Keith
- Language: English
- Year: 2013
- Author: Ferrazzi Keith, Raz Tahl
- Language: English
- Year: 2005
- Author: Ferrazzi Keith, Raz Tahl
- Language: English
- Year: 2014
- Author: Ferrazzi Keith, Raz Tahl
- Language: English
- Year: 2014
- Author: Ferrazzi Keith, Gerber Scott, Paugh Ryan
- Language: English
- Year: 2018