Møller, V., Huschka, D., & Michalos, A. C. (2009). Barometers of Quality of Life Around the Globe: How Are We Doing? Springer Netherlands. https://doi.org/10.1007/978-1-4020-8686-1

Møller, Valerie, Denis Huschka, and Alex C. Michalos. Barometers of Quality of Life Around the Globe: How Are We Doing? Dordrecht: Springer Netherlands, 2009. https://doi.org/10.1007/978-1-4020-8686-1.

Møller, Valerie, et al. Barometers of Quality of Life Around the Globe: How Are We Doing? Springer Netherlands, 2009. https://doi.org/10.1007/978-1-4020-8686-1.