Tài liệu tham khảo WikiPedia: Chúa_vốn_Bức_thành_Kiên_cố http://www.biblegateway.com/passage/?search=Psalm%... http://www.hymntime.com/tch/htm/m/i/mightyfo.htm http://www.youtube.com/watch?v=NRJHKzU_t1M http://www.youtube.com/watch?v=Z8iQUHV4J5g&feature... http://www.youtube.com/watch?v=_DlNzrvrugM&feature... http://www.cofe.anglican.org/worship/liturgy/commo... http://www.christnotes.org/bible.php?q=psalm+46&ve... http://www.cyberhymnal.org/htm/s/a/safestrh.htm http://www.cyberhymnal.org/non/de/festburg.htm https://web.archive.org/web/20080517035357/http://...
