Curnow, J. (2007). Gospel for Two: 10 unaccompanied duets for bass clef instruments (trombone, euphonium and others) / [selected and arr. by James Curnow]. Curnow.
Chicago-referens (17:e uppl.)Curnow, James. Gospel for Two: 10 Unaccompanied Duets for Bass Clef Instruments (trombone, Euphonium and Others) / [selected and Arr. by James Curnow]. Wilmore, Ky.: Curnow, 2007.
MLA-referens (8:e uppl.)Curnow, James. Gospel for Two: 10 Unaccompanied Duets for Bass Clef Instruments (trombone, Euphonium and Others) / [selected and Arr. by James Curnow]. Curnow, 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.