Παραπομπή σε μορφή APA (7η εκδ.)

Leidner, R. (2004). The european tourism industry: A multi-sector with dynamic markets. Office for Official Publications of the European Communities.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Leidner, Rudiger. The European Tourism Industry: A Multi-sector with Dynamic Markets. Luxembourg: Office for Official Publications of the European Communities, 2004.

Παραπομπή σε μορφή MLA (8th εκδ.)

Leidner, Rudiger. The European Tourism Industry: A Multi-sector with Dynamic Markets. Office for Official Publications of the European Communities, 2004.