Worapan Sitthithaworn. 1996. Alkaloids from roots and leaves of Alangium Salviifolium wang. subsp. Hexapetalum wang. Department of Pharmacognosy, Chulalongkorn University;
Worapan Sitthithaworn. (1996) Alkaloids from roots and leaves of Alangium Salviifolium wang. subsp. Hexapetalum wang. . Chulalongkorn University/Bangkok.
Worapan Sitthithaworn. Alkaloids from roots and leaves of Alangium Salviifolium wang. subsp. Hexapetalum wang. . Bangkok:Chulalongkorn University, 1996.
Worapan Sitthithaworn. (1996) Alkaloids from roots and leaves of Alangium Salviifolium wang. subsp. Hexapetalum wang. . Chulalongkorn University/Bangkok.