- British Institute of Management, London

- The Institution of Mechanical Engineers, London

- The Institution of Plant Engineers, London

- Institute for Workers' Control, Nottingham

- The Nigerian Society of Engineers, Lagos

- American Management Association/International, New York

- American Society of Engineering Education, Washington

- League for Industrial Democracy, New York

- Ordre des Ingénieurs, Athènes

- Société Hellénique pour la Gestion des Entreprises, Athènes

- Société Ethnographique de Grèce, Athènes