Pawarnluch Prisajanan และ Anyapak Prapannetivuth. (2011) Bicycle tourism development in Bankok :. Naresuan University,:ม.ป.ท.Pawarnluch Prisajanan และ Anyapak Prapannetivuth. 2011. Bicycle tourism development in Bankok :. ม.ป.ท.:Naresuan University,;Pawarnluch Prisajanan และ Anyapak Prapannetivuth. Bicycle tourism development in Bankok :. ม.ป.ท.:Naresuan University, 2011. Print.