http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
TM tài liệu tham khảo tr. 335 - 341; Gồm: Quê hương - lề lối - phong tục - nguồn gốc quan họ; tìm hiểu lời ca quan họ; âm nhạc dân ca quan họ và một số bài hát dân ca quan họ trong phần phụ lục.
Trần Linh Quý, Hồng Thao (s.t & g.thiệu)