Tài liệu tham khảo WikiPedia: Nhạc cách mạng https://catalogue.bnf.fr/ark:/12148/cb11965367d https://data.bnf.fr/ark:/12148/cb11965367d https://id.loc.gov/authorities/subjects/sh85113449 https://id.ndl.go.jp/auth/ndlna/00564747 https://www.wikidata.org/wiki/Q265147#identifiers
