Παραπομπή APA

Tolkien, J., & Tolkien, C. (2009). Legends of sigurd and gudrun. HarperCollins Publishers.

Παραπομπή Chicago Style

Tolkien, J.R.R, και Christopher Tolkien. Legends of Sigurd and Gudrun. London: HarperCollins Publishers, 2009.

Παραπομπή MLA

Tolkien, J.R.R, και Christopher Tolkien. Legends of Sigurd and Gudrun. HarperCollins Publishers, 2009.