- Author: Varela Francisco J.
- Language: German
- Year: 1993
- Author: Varela Francisco
- Language: German
- Year: 1998
- Author: Varela Francisco J., Maturana Humberto R
- Language: English
- Year: 2008
- Author: Dalai Lama XIV Bstan-ʼdzin-rgya-mtsho, Hayward Jeremy W., Varela Francisco J
- Language: English
- Year: 2014
- Author: Humberto R. Maturana, Francisco J. Varela, Francisco Varela G.
- Language: Spanish
- Year: 2008
- Author: Varela Francisco J., Stein Wilfred D
- Language: English
- Year: 1993