Papadaki-Klavdianou, A., Menkisoglou-Spiroudi, O., Tsakiridou, E., & European Centre for the Development of Vocational Training. (2003). Quality of agricultural products and protection of the environment: Training, knowledge dissemination and certification : synthesis report of a study in five European countries. Luxembourg: Office for Official Publications of the European Communities.

Papadaki-Klavdianou, Afroditi., Ourania Menkisoglou-Spiroudi, Efthimia Tsakiridou, and European Centre for the Development of Vocational Training. Quality of Agricultural Products and Protection of the Environment: Training, Knowledge Dissemination and Certification : Synthesis Report of a Study in Five European Countries. Luxembourg: Office for Official Publications of the European Communities, 2003.

Papadaki-Klavdianou, Afroditi., Ourania Menkisoglou-Spiroudi, Efthimia Tsakiridou, and European Centre for the Development of Vocational Training. Quality of Agricultural Products and Protection of the Environment: Training, Knowledge Dissemination and Certification : Synthesis Report of a Study in Five European Countries. Luxembourg: Office for Official Publications of the European Communities, 2003.