"LaosArchived 2016-06-24 at the वेबैक मशीन," Andrew Burke and Justine Vaisutis, Page 344, Lonely Planet, 2007, ISBN 9781741045680, ... 'x' represents a Lao letter that historically was pronounced as 'ch' but eventually became 's' in the Lao sound system ... pronounce all instances of 'x' as 's' ...
web.archive.org
"LaosArchived 2016-06-24 at the वेबैक मशीन," Andrew Burke and Justine Vaisutis, Page 344, Lonely Planet, 2007, ISBN 9781741045680, ... 'x' represents a Lao letter that historically was pronounced as 'ch' but eventually became 's' in the Lao sound system ... pronounce all instances of 'x' as 's' ...