Enquêtes
– Ringolds BALODIS (Ed.), State and Church in the Baltic States, 2001, Latvian Association for Freedom of Religion, 2001.
– US State department annual International Religious Freedom Report 2014.
– Ringolds BALODIS (Ed.), State and Church in the Baltic States, 2001, Latvian Association for Freedom of Religion, 2001.
– US State department annual International Religious Freedom Report 2014.