- Author: Paul Felix Aschrott
- Language: German
- Year: 1887
- Author: Paul Felix, Sian Ellis, Tom Quinn
- Language: English
- Year: 2012
- Author: Piaget Jean, Lazarsfeld Paul Felix, Mackenzie W.J.M., Friedman Samy
- Language: Spanish
- Year: 2016
- Author: Paul Felix Lazarsfeld and Morris Rosenberg
- Language: English
- Year: 1965
- Author: Paul Felix Lazarsfeld and Morris Rosenberg
- Language: English
- Year: 1965
- Author: Paul Felix Lazarsfeld Morris Rosenberg
- Language: English
- Year: 1955