Pen, R. (2010). I wonder as I wander: The life of John Jacob Niles. University Press of Kentucky.
Cita Chicago (17th ed.)Pen, Ronald. I Wonder as I Wander: The Life of John Jacob Niles. Lexington, Ky: University Press of Kentucky, 2010.
Cita MLA (9th ed.)Pen, Ronald. I Wonder as I Wander: The Life of John Jacob Niles. University Press of Kentucky, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.