Natteera Samarak. 2002. Plant growth regulators from the roots of Tylophora indica Merr. Field of Study Chemistry, Chulalongkorn University;
Natteera Samarak. (2002) Plant growth regulators from the roots of Tylophora indica Merr . Chulalongkorn University/Bangkok.
Natteera Samarak. Plant growth regulators from the roots of Tylophora indica Merr. . Bangkok:Chulalongkorn University, 2002.
Natteera Samarak. (2002) Plant growth regulators from the roots of Tylophora indica Merr . Chulalongkorn University/Bangkok.