Gaya APA
Boytim, J, F. (2004).
15 Easy Folksong Arrangements for the Progressing Singer .
Milwaukee, USA:
Hal Leonard Corporation.
Gaya MLA
Boytim, Joan, Frey.
"15 Easy Folksong Arrangements for the Progressing Singer".
Milwaukee, USA:
Hal Leonard Corporation,
2004.
Musical Score.