Columbia subject headings:
Church music--Orthodox Eastern Church--Sources.
Church music--Russia.
Church music--Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Sources.
Harvard subject headings:
Church music--Orthodox Eastern Church--Sources.
Church music--Russia.
Church music--Russkai͡a pravoslavnai͡a t͡serkovʹ--Sources.
Princeton subject headings:
Church music--Orthodox Eastern Church--Sources.
Church music--Russia--Sources.
Church music--Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Sources.