Gummere, F. B. (1959). The popular ballad. New York: Dover Publications.
Chicago Style CitationGummere, Francis Barton. The Popular Ballad. New York: Dover Publications, 1959.
Cita MLAGummere, Francis Barton. The Popular Ballad. New York: Dover Publications, 1959.
Atenció: Aquestes cites poden no estar 100% correctes.