Παραπομπή σε μορφή APA (7η εκδ.)

Colardyn, D., & Bjornavold, J. (2005). The learning continuity: European inventory on validating non-formal and informal learning. Office for Official Publications of the European Communities.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Colardyn, Danielle, και Jens Bjornavold. The Learning Continuity: European Inventory on Validating Non-formal and Informal Learning. Luxembourg: Office for Official Publications of the European Communities, 2005.

Παραπομπή σε μορφή MLA (8th εκδ.)

Colardyn, Danielle, και Jens Bjornavold. The Learning Continuity: European Inventory on Validating Non-formal and Informal Learning. Office for Official Publications of the European Communities, 2005.