Cha`o qui' vi., O+? trong trang du+o+'i dda^y: http://www.jaist.ac.jp/~dnthao/index_files/phongtuc/phongtuc/index.html co' 112 ca^u ho?i va` tra? lo+`i ve^` mo.i dde^` ta`i thuo^.c chu? dde^` Phong tu.c Vie^.t Nam\. Cha`o Pha.m Quo^'c Bi`nh http://vmdd.tech.mylinuxisp.com/vn-families/thumoi.html