
- Author: Humberto R Maturana, Cristina Magro, Victor Paredes
- Language: Portuguese
- Year: 2001

- Author: Humberto Romesín Maturana
- Language: Spanish
- Year: 2009

- Author: Niklas Luhmann Humberto R. Maturana Mikio Namiki Volker Redder Francisco Varela
- Language: German
- Year: 2003

- Author: Humberto R. Maturana Francisco J. Varela
- Language: English
- Year: 1980

- Author: Humberto R. Maturana Francisco J. Varela
- Language: English
- Year: 1992