Nattapong Chanchula และ Thunya Taychasinpitak. (2015) Biotechnological techniques for improvement of native torenia and their hybrids. Kasetsart University:ม.ป.ท.Nattapong Chanchula และ Thunya Taychasinpitak. 2015. Biotechnological techniques for improvement of native torenia and their hybrids. ม.ป.ท.:Kasetsart University;Nattapong Chanchula และ Thunya Taychasinpitak. Biotechnological techniques for improvement of native torenia and their hybrids. ม.ป.ท.:Kasetsart University, 2015. Print.