Beirão, G, and José António  Sarsfield Cabral. ?Understanding Attitudes Towards Public Transport And Private Car: A Qualitative Study?. Transport Policy 14. Transport Policy  (2007): 478-489.

Beirão, G, and José António  Sarsfield Cabral. ?Understanding Attitudes Towards Public Transport And Private Car: A Qualitative Study?. Transport Policy 14. Transport Policy  (2007): 478-489.