Asian Highway Handbook(PDF). UN ECONOMIC AND SOCIAL COMMISSION FOR ASIA AND THE PACIFIC. 2003. pp. 63–65, 104–107. Archived from the original on 14 April 2012. Retrieved 15 June 2020. Archived 14 April 2012 at the Wayback Machine
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Asian Highway Handbook(PDF). UN ECONOMIC AND SOCIAL COMMISSION FOR ASIA AND THE PACIFIC. 2003. pp. 63–65, 104–107. Archived from the original on 14 April 2012. Retrieved 15 June 2020. Archived 14 April 2012 at the Wayback Machine