H. B. Mayo
Deng Xiaomang
Max Horkheimer
Raymond Aron
Jean-Paul Sartre
Jacques Guillaumaud
Alan E. Fruzzetti
Somerville, John
Paul Foulquié
Gilles de Launay
Petrus Ramus
Unknown Author
Paul Janet
Herbert Marcuse
Klaus F. Riegel
Alexandre Kojève
Howard, Dick
Pietro Chiodi
Friedrich Engels