Παραπομπή σε μορφή APA (7η εκδ.)

European Geoparks Network. (2006). Development of European Geoparks: Proceedings of the International Symposium of the European Geoparks Network, Crete, 2-5 October 2003. [s.n.].

Παραπομπή σε μορφή Chicago (17η εκδ.)

European Geoparks Network. Development of European Geoparks: Proceedings of the International Symposium of the European Geoparks Network, Crete, 2-5 October 2003. Crete: [s.n.], 2006.

Παραπομπή σε μορφή MLA (8th εκδ.)

European Geoparks Network. Development of European Geoparks: Proceedings of the International Symposium of the European Geoparks Network, Crete, 2-5 October 2003. [s.n.], 2006.