Pravit Singtothong. 1999. Chemistry and biological activity of diterpenoid compounds from Croton oblongifolius Roxb. Field of Study Chemistry, Chulalongkorn University;
Pravit Singtothong. (1999) Chemistry and biological activity of diterpenoid compounds from Croton oblongifolius Roxb. . Chulalongkorn University/Bangkok.
Pravit Singtothong. Chemistry and biological activity of diterpenoid compounds from Croton oblongifolius Roxb. . Bangkok:Chulalongkorn University, 1999.
Pravit Singtothong. (1999) Chemistry and biological activity of diterpenoid compounds from Croton oblongifolius Roxb. . Chulalongkorn University/Bangkok.