©2013 National Research Council of Thailand
Tippawan Tongkhundum. 2008. The effects of teaching using a task-based approach on English communicative ability of the first-year students at Nakhon Si Thammarat Rajabhat University. Bangkok:Thammasat University;
Tippawan Tongkhundum. (2008) The effects of teaching using a task-based approach on English communicative ability of the first-year students at Nakhon Si Thammarat Rajabhat University (รายงานผลงานวิจัย). Thammasat University:Bangkok.
Tippawan Tongkhundum. The effects of teaching using a task-based approach on English communicative ability of the first-year students at Nakhon Si Thammarat Rajabhat University. Bangkok:Thammasat University, 2008.
Tippawan Tongkhundum. (2008) The effects of teaching using a task-based approach on English communicative ability of the first-year students at Nakhon Si Thammarat Rajabhat University (รายงานผลงานวิจัย). Thammasat University:Bangkok.