Lua APA (7ú heag.)
Pen, R. (2010). I wonder as I wander: The life of John Jacob Niles. University Press of Kentucky.
Lua i Stíl Chicago (17ú heag.)
Pen, Ronald. I Wonder as I Wander: The Life of John Jacob Niles. Lexington, Ky: University Press of Kentucky, 2010.
Lua MLA (9ú heag.)
Pen, Ronald. I Wonder as I Wander: The Life of John Jacob Niles. University Press of Kentucky, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.