Wanna Laowagul. 2008. Application of Receptor Model for VOCs Source Apportionment in Urban Area in Thailand. Bangkok:Ministry of Natural Resources and Environment;
Wanna Laowagul. (2008) Application of Receptor Model for VOCs Source Apportionment in Urban Area in Thailand (รายงานผลงานวิจัย). Ministry of Natural Resources and Environment:Bangkok.
Wanna Laowagul. Application of Receptor Model for VOCs Source Apportionment in Urban Area in Thailand. Bangkok:Ministry of Natural Resources and Environment, 2008.
Wanna Laowagul. (2008) Application of Receptor Model for VOCs Source Apportionment in Urban Area in Thailand (รายงานผลงานวิจัย). Ministry of Natural Resources and Environment:Bangkok.