Source: https://www.researchgate.net/profile/Jordane-Creusier/publication/281001656_Proposition_d'une_echelle_de_mesure_positive_du_bien-etre_au_travail_EPBET/links/55f0908108ae0af8ee1d2504/Proposition-dune-echelle-de-mesure-positive-du-bien-etre-au-travail-EPBET.pdf