Herman Deleeck Published in 2001 in Leuven by Acco

Umberto Eco, Patty Krone, Yond Boeke Published in 1994 in Amsterdam by Bakker

Andreas Demetriou, Anastasia Efklides Published in 1993 in Chicago (Ill.) by Society for research in child development

Herman Deleeck Published in 1992 in Leuven by Acco

Olga Quadens, Pat West, Pieter Van Dooren Published in 1991 in Kapellen by DNB/Pelckmans

Andrew Baum, Stuart Valins Published in 1977 in Hillsdale (N.J.) by Erlbaum

Donald J Conway Published in 1977 in Stroudsburg (Pa.) by Dowden, Hutchinson and Ross

Ivan Illich, P. M. A Vermijmeren, Leon Van Gelder Published in 1977 in Baarn by Wereldvenster

Albert Mehrabian Published in 1976 in New York (N.Y.) by Basic books

Rikard Küller Published in 1973 in Lund by Studentlitteratur

M. Paul Friedberg, Ellen Perry Berkeley, Thomas P. F Hoving Published in 1970 in London by MacMillan

Ulfert Herlyn Published in 1970 in Stuttgart by Krämer