Riordan, R. (2016). Hotel Valhalla guide to the Norse worlds: An official Magnus Chase companion book. Puffin.
Lua i Stíl Chicago (17ú heag.)Riordan, Rick. Hotel Valhalla Guide to the Norse Worlds: An Official Magnus Chase Companion Book. London: Puffin, 2016.
Lua MLA (8ú heag.)Riordan, Rick. Hotel Valhalla Guide to the Norse Worlds: An Official Magnus Chase Companion Book. Puffin, 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.