Παραπομπή σε μορφή APA (7η εκδ.)

Guggenheim, E. F. (2002). Identification, evaluation and recognition of non-formal learning: Proceedings...[from]. Office for Official Publications of the European Communities.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Guggenheim, Eric Fries. Identification, Evaluation and Recognition of Non-formal Learning: Proceedings...[from]. Luxembourg: Office for Official Publications of the European Communities, 2002.

Παραπομπή σε μορφή MLA (8th εκδ.)

Guggenheim, Eric Fries. Identification, Evaluation and Recognition of Non-formal Learning: Proceedings...[from]. Office for Official Publications of the European Communities, 2002.