Rukka Sombolinggi และ Vira Somboon. (2009) Palm oil plantations in Indonesia : government policy and its impact on indigenous peoples in West Kalimantan Province. Chulalongkorn University:ม.ป.ท.Rukka Sombolinggi และ Vira Somboon. 2009. Palm oil plantations in Indonesia : government policy and its impact on indigenous peoples in West Kalimantan Province. ม.ป.ท.:Chulalongkorn University;Rukka Sombolinggi และ Vira Somboon. Palm oil plantations in Indonesia : government policy and its impact on indigenous peoples in West Kalimantan Province. ม.ป.ท.:Chulalongkorn University, 2009. Print.