Riordan, R. (2016). Hotel Valhalla guide to the Norse worlds: An official Magnus Chase companion book. Puffin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRiordan, Rick. Hotel Valhalla Guide to the Norse Worlds: An Official Magnus Chase Companion Book. London: Puffin, 2016.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRiordan, Rick. Hotel Valhalla Guide to the Norse Worlds: An Official Magnus Chase Companion Book. Puffin, 2016.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.