The Saga of the Volsungs (Völsunga Saga)
This 13th century Icelandic Saga tells of the rise and fall of the Völsung clan.

Other Books
Encyclopedia of Norse and Germanic Folklore, Mythology, and Magic
The Poetic Edda, Crawford
Volsunga Saga
Seventy-Eight Degrees of Wisdom
The Prose Edda, Faulkes
The Poetic Edda, Dronke
Northern Mythology V2
Worshiping Loki
The Prose Edda, Public Domain
D’Aulaires’ Book of Norse Myths