- Author: Huxley-Blythe Peter
- Language: English
- Year: 1968
- Author: William Graham Sumner
- Language: English
- Year: 1974
- Author: Neill Humphrey B.
- Language: English
- Year: 1954
- Author: Erik Ritter von Kuehnelt-Leddihn
- Language: English
- Year: 1952
- Author: Albert Jay Nock
- Language: Portuguese
- Year: 1950
- Author: NEILL Humphrey B.
- Language: English
- Year: 1954