Noppamast Sae-Tang และ Sansanee Choowaew. (2016) An assessment of existing and potential ecotourism boat routes at bueng borapet, Nakhon Sawan province,thailand. Mahidol University:ม.ป.ท.Noppamast Sae-Tang และ Sansanee Choowaew. 2016. An assessment of existing and potential ecotourism boat routes at bueng borapet, Nakhon Sawan province,thailand. ม.ป.ท.:Mahidol University;Noppamast Sae-Tang และ Sansanee Choowaew. An assessment of existing and potential ecotourism boat routes at bueng borapet, Nakhon Sawan province,thailand. ม.ป.ท.:Mahidol University, 2016. Print.