- en.wikipedia.org/wiki/Lego_Ninjago
- en.wikipedia.org/wiki/Lego_Ninjago:_Masters_of_Spinjitzu
- lego.wikia.com/wiki/List_of_Ninjago_sets
- http://ninjago.lego.com/de-de/SpinjitzuZone/FAQ/default.aspx
- http://ninjago.lego.com/de-de/SpinjitzuZone/CardDictionary/Default.aspx
- http://ninjago.lego.com/en-gb/Spinjitzuzone/CardDictionary/default.aspx
- …
to be continued resp. updated.
