[1] Keynes, John Maynard. "Economic possibilities for our grandchildren." In Essays in persuasion, pp. 321-332. Palgrave Macmillan, London, 2010.
[2] Charlie Giattino, Esteban Ortiz-Ospina and Max Roser (2020) - "Working Hours". Published online at OurWorldInData.org. Retrieved from: 'https://ourworldindata.org/working-hours' [Online Resource]
[3] Stronge, Will, and Kyle Lewis. Overtime: Why We Need a Shorter Working Week. Verso Books, 2021.