1. The Harried Leisure Class;Linder,1970
2. Jugaad Innovation: Think Frugal, Be Flexible, Generate Breakthrough Growth;Radjou,2012
3. The Lonely Crowd: A Study of the Changing American Character;Reisman,1950
4. Bowling Alone: The Collapse and Revival of American Community;Putnam,2000
5. The Howard-Sheth Theory of Buyer Behavior;Sheth,2020