Gaya APA
Hayburn, R, F. (1979).
Papal legislation on sacred music, 95 A.D. to 1977 A.D. .
Collegeville:
Liturgical Press.
Gaya MLA
Hayburn, Robert, F..
"Papal legislation on sacred music, 95 A.D. to 1977 A.D. ".
Collegeville:
Liturgical Press,
1979.
Buku.