Sawapa Tangsawapak และ Vira Somboon. (2011) Transboder rubber investment and its implications on food security in Lao PDR : A case study of Thai rubber plantations in Atsaphone, Savannakhet province. Chulalongkorn University:ม.ป.ท.Sawapa Tangsawapak และ Vira Somboon. 2011. Transboder rubber investment and its implications on food security in Lao PDR : A case study of Thai rubber plantations in Atsaphone, Savannakhet province. ม.ป.ท.:Chulalongkorn University;Sawapa Tangsawapak และ Vira Somboon. Transboder rubber investment and its implications on food security in Lao PDR : A case study of Thai rubber plantations in Atsaphone, Savannakhet province. ม.ป.ท.:Chulalongkorn University, 2011. Print.