1. -Abrahamse .W and et al (2009). Factor influencing car use for commuting and the intention to reduce it: Aquestion of self – interest or morality ?

2. -Alfonzo,M.(2005).To Walk or not to Walk?The Hierarchy of Walking Need Environment and Behavior,37

3. Arnott.Bronia, Rehackova.Lucia, Errington. Linda ,Sniehotta.Falko F, Roberts.Jennifer s,Araujo-Soares.Vera (2014). »Efficacy of behavioral intervention for transport behavior change: systematic review, meta- analysis and intervention coding«,The International Journal of Behavioral Nutrition and Physical Activity, 11, Article ID 133.

4. -Bloor,M.J.Frankland , M.Thomas and K.Robson (2001).Focus Groups in social Research .London : sage Publications.

5. -Cervero, R., & Kockelman, K. (1997). Travel Demand and the 3Ds. Density, Diversity, and Design, Transportation Research D, 2(3), 199–219.

7. -Ewing, R., & Cervero, R. (2001). Travel and the Built Environment, Transportation Research Record, 1780, 87–114.

8. -Fern E (2001).Advanced Focus Group Research .Thousand Oaks CA:sage Publications.

9. -Gardner,B ,Abraham.C.( 2008). psychological correlates of car use : A meta- analysis.Tranportation Research Part F : Teaffic Psychology and Behaviour .Volume 11.Issue 4.July .Pages 300-311

10. -Grazi, F. & Van den Bergh, Jeroen C.J.M.( 2008). Spatial Organization, Transport, and Climate Change: Comparing Instruments of Spatial Planning and Policy, Ecological Ecoomics,Vol. 67, PP. 630-639

11. -Himanen,Veli,et al( 2010 ).Sustainablity and interation between external effects of transport ,Journal of transport geography.

12. -Krueger , R (1988).Practical Guide for Applied Reseaech ,Thousand Oaks, CA:sage Publications.

13. -Krueger,R.and M.Casey (2000),Focus Groups:A Practical Guide for Applied Research, Third Edition.Thousand Oaks,CA:Sage Publications.

14. -KRC Research,Millennials Driving:A Survey Commissioned by zipcar ,November 2010

15. -Leck, E. (2006). The impact of urban form on travel behavior: a meta-analysis. Berkeley Planning Journal 19, 37–58

17. -Nam K. Lim U.and Kim B. H. S. (2012).‘Compact’ or ‘Sprawl’ for sustainable urban form? Measuring the effect on travel behavior in Korea. Annals of Regional Science ,49. 157-173.

18. -National Travel Survey(2013) ,Statistical Release,Department for Transport,Revised 19 september 2013.

19. -Ritchi ,J and J.Lewis (2003).Qualitative Research Practice : A guide for social science students and Researchre.London: sage Publications.

20. -World Health Organization.www.who.int.