Fonte positiva dos dados

Sec. de: Bach, Johann Sebastian. Kantaten = Cantatas = Cantates. 1976.

http://authorities.loc.gov: (d.n.)

http://viaf.org/processed/BNE%7CXX1769280: (d.n.)

https://en.schott-music.com/shop/autoren/reinhard-gerlach: (d.n.)