Παραπομπή σε μορφή APA (7η εκδ.)
The Federation of Nature and National Parks of Europe (FNNPE) & The Federation of Nature and National Parks of Europe (FNNPE). (1993). Loving them to death?: Sustainable tourism in Europe 's nature and national parks. Federation of Nature and National Parks of Europe.
Παραπομπή σε μορφή Chicago (17η εκδ.)
The Federation of Nature and National Parks of Europe (FNNPE) και The Federation of Nature and National Parks of Europe (FNNPE). Loving Them to Death?: Sustainable Tourism in Europe 'S Nature and National Parks. Federation of Nature and National Parks of Europe, 1993.
Παραπομπή σε μορφή MLA (9th εκδ.)
The Federation of Nature and National Parks of Europe (FNNPE) και The Federation of Nature and National Parks of Europe (FNNPE). Loving Them to Death?: Sustainable Tourism in Europe 'S Nature and National Parks. Federation of Nature and National Parks of Europe, 1993.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.