
- Author: Dale Carnegie Training
- Language: Portuguese
- Year: 2014

- Author: Dale Carnegie Training
- Language: English
- Year: 2011

- Author: Dale Carnegie Training
- Language: Spanish
- Year: 2013

- Author: Dale Carnegie Training
- Language: Spanish
- Year: 2022

- Author: Dale Carnegie Training
- Language: Spanish
- Year: 2019

- Author: Dale Carnegie Training (Firm)
- Language: English
- Year: 2009