@Article{395607,
     author = "Stanisław Siek",
     title = ""Psychological Differentiation", H.A. Witkin, London 1962 : [recenzja]",
     year =  1968,
     volume =  4,
     number =  1,
     journal =  Studia Philosophiae Christianae,
     pages =  s. 228-232,
    }