WAGER, Gregg. Early German Sound Sourcing with Songs in the Trilogy of the Mackeben-Jugo-Engel Ensemble. Journal of Film Music, [S. l.], v. 7, n. 1, p. 21–51, 2017. DOI: 10.1558/jfm.27096. Disponível em: https://journal.equinoxpub.com/JFM/article/view/4027. Acesso em: 13 apr. 2025.