Sitamanats Suwanachaiy และผู้แต่งคนอื่นๆ. (2007) Six minute walk test in healthy persons with sufficient and insufficint levels of physical activity. Chulalongkorn University:ม.ป.ท.Sitamanats Suwanachaiy และผู้แต่งคนอื่นๆ. 2007. Six minute walk test in healthy persons with sufficient and insufficint levels of physical activity. ม.ป.ท.:Chulalongkorn University;Sitamanats Suwanachaiy และผู้แต่งคนอื่นๆ. Six minute walk test in healthy persons with sufficient and insufficint levels of physical activity. ม.ป.ท.:Chulalongkorn University, 2007. Print.