Παραπομπή σε μορφή APA (7η εκδ.)

Renn, J. ECHO - an infrastructure to bring European cultural heritage online: Jürgen Renn. Echo : an infrastructure to bring European cultural heritage online ; the foundation papers of a European initiative.(2002).

Παραπομπή σε μορφή Chicago (17η εκδ.)

Renn, Jürgen. "ECHO - an Infrastructure to Bring European Cultural Heritage Online: Jürgen Renn." Echo : An Infrastructure to Bring European Cultural Heritage Online ; the Foundation Papers of a European Initiative.(2002) .

Παραπομπή σε μορφή MLA (8th εκδ.)

Renn, Jürgen. "ECHO - an Infrastructure to Bring European Cultural Heritage Online: Jürgen Renn." Echo : An Infrastructure to Bring European Cultural Heritage Online ; the Foundation Papers of a European Initiative.(2002), .