- Author: Hofmann Albert, Grof Stanislav, Werthmüller Lucius, Hagenbach Dieter A., Geuss William, Sperling Linda
- Language: English
- Year: 2013
- Author: Albert Hofmann
- Language: English, German
- Year: 2009
- Author: Kozol Harry L., Kozol Jonathan
- Language: English
- Year: 2015