REFERENCES
- Gladwell , Malcom . 2002 . The Tipping Point: How Little Things can Make a Big Difference , New York : Back Bay Books .
- Oldenburg , Ray . 1999 . The Great Good Place: Cafes, Coffee Shops, Bookstores, Bars, Hair Salons, and Other Hangouts at the Heart of a Community , Cambridge, MA : Da Capo Press .