Gesa, Frömming. Ennui. Routledge Encyclopedia of Modernism, Taylor and Francis, https://www.rem.routledge.com/articles/ennui.
Gesa, F.(2016). Ennui. In The Routledge Encyclopedia of Modernism. Taylor and Francis. Retrieved 19 Apr. 2024, from https://www.rem.routledge.com/articles/ennui. doi:10.4324/9781135000356-REM1154-1
Gesa, F. 2016, 'Ennui' In: Routledge Encyclopedia of Modernism, Taylor and Francis, viewed 19 April 2024, <https://www.rem.routledge.com/articles/ennui>. doi:10.4324/9781135000356-REM1154-1