Gaya APA
Widyawan, Paul, Sumardi. (1992).
Folk song .
Yogyakarta:
Pusat Musik Liturgi.
Gaya Chicago
Widyawan, Paul, Sumardi.
Folk song.
Yogyakarta:
Pusat Musik Liturgi,
1992.
Text.
Gaya MLA
Widyawan, Paul, Sumardi.
Folk song.
Yogyakarta:
Pusat Musik Liturgi,
1992.
Text.
Gaya Turabian
Widyawan, Paul, Sumardi.
Folk song.
Yogyakarta:
Pusat Musik Liturgi,
1992.
Print.