Smith, Richard (август 2008). „The Long Slide to Happiness”. Journal of Philosophy of Education. 42 (3–4): 559—573. doi:10.1111/j.1467-9752.2008.00650.x.CS1 одржавање: Формат датума (веза)
https://plato.stanford.edu/entries/happiness/Архивирано 2018-06-11 на сајту Wayback Machine 2011, "‘Happiness’ is often used, in ordinary life, to refer to a short-lived state of a person, frequently a feeling of contentment: ‘You look happy today’; ‘I’m very happy for you’. Philosophically, its scope is more often wider, encompassing a whole life. And in philosophy it is possible to speak of the happiness of a person’s life, or of their happy life, even if that person was in fact usually pretty miserable. The point is that some good things in their life made it a happy one, even though they lacked contentment. But this usage is uncommon, and may cause confusion.' https://plato.stanford.edu/entries/well-being/Архивирано 2018-10-25 на сајту Wayback Machine 2017
https://plato.stanford.edu/entries/happiness/Архивирано 2018-06-11 на сајту Wayback Machine 2011, "‘Happiness’ is often used, in ordinary life, to refer to a short-lived state of a person, frequently a feeling of contentment: ‘You look happy today’; ‘I’m very happy for you’. Philosophically, its scope is more often wider, encompassing a whole life. And in philosophy it is possible to speak of the happiness of a person’s life, or of their happy life, even if that person was in fact usually pretty miserable. The point is that some good things in their life made it a happy one, even though they lacked contentment. But this usage is uncommon, and may cause confusion.' https://plato.stanford.edu/entries/well-being/Архивирано 2018-10-25 на сајту Wayback Machine 2017
wolframalpha.com
„happiness”. Wolfram Alpha. Архивирано из оригинала 18. 07. 2011. г. Приступљено 24. 02. 2011.
