Παραπομπή σε μορφή APA (7η εκδ.)

Ehlers, U., Goertz, L., & Hildebrand, B. (2005). Quality in e-learning: Use and dissemination of quality approaches in European e-learning. Office for Official Publications of the European Communities.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ehlers, Ulf-Daniel, Lutz Goertz, και Barbara Hildebrand. Quality in E-learning: Use and Dissemination of Quality Approaches in European E-learning. Luxembourg: Office for Official Publications of the European Communities, 2005.

Παραπομπή σε μορφή MLA (8th εκδ.)

Ehlers, Ulf-Daniel, et al. Quality in E-learning: Use and Dissemination of Quality Approaches in European E-learning. Office for Official Publications of the European Communities, 2005.