1. Almaatouq, A. (2016). Freundschaft: die gesündeste Beziehung. Tagesanzeiger. Retrieved 31 May 2020, from https://www.tagesanzeiger.ch/leben/gesellschaft/diegesuendeste-aller-beziehungen/story/31868506.
2. Antony, M., & Sheldon, P. (2019). “Is the friendship worth keeping:” Gender differences in communicating forgiveness in friendships. Communication Quarterly, 67(3), 291–311. https://doi.org/10.1080/01463373.2019.1573746
3. Arendt, H. (2002). Denktagebuch, Dezember 1950. München, Zürich: Piper.
4. Argyle, M. (1986). Rules for social relationships in four cultures. Australian Journal of Psychology, 38(3), 309–318. https://doi.org/10.1080/00049538608259017.
5. Argyle, M. (1999). Causes and correlates of happiness. In D. Kahneman, E. Diener, & N. Schwarz (Eds.), Well-being: The foundations of hedonic psychology (pp. 354–373). New York: Russell Sage Foundation.