Apassorn Watanasomsiri. 2004. Efficacy of montelukast and loratadine as a treatment for allergic rhinitis. Bangkok:Thammasat University;
Apassorn Watanasomsiri. (2004) Efficacy of montelukast and loratadine as a treatment for allergic rhinitis (รายงานผลงานวิจัย). Thammasat University:Bangkok.
Apassorn Watanasomsiri. Efficacy of montelukast and loratadine as a treatment for allergic rhinitis. Bangkok:Thammasat University, 2004.
Apassorn Watanasomsiri. (2004) Efficacy of montelukast and loratadine as a treatment for allergic rhinitis (รายงานผลงานวิจัย). Thammasat University:Bangkok.