Inglehart et al., 2008, “Development, freedom, and rising happiness.”
233
Gair, 2007, American Counterculture.
234
Исчерпывающий обзор этих проблем можно найти в: Oakes, Michael. 2012. “Measuring Socioeconomic Status.” NIH Office of Behavioral and Social Science Research. E-source: Behavioral and Social Sciences Research (online textbook). .
