Saya mau tau Sejarah Alps dari Heidi. Jelaskan dalam bahasa melayu

Heidi (in English) free downloads in multiple ebook formats

Heidi's Land, The official Web site (in French) for the 1980s television show with Katia Polletin (Heidi) and Stefan Arpagaus (Peter)

Remembering Heidi: Swiss Pride at its best, by Dr. Anton Anderssen

Swiss Heidi may in fact be German

Johanna Spyri's stolen Alps story?(in German)