Penpun Wetwitayaklung. 1994. Chemical constituents from the heartwood of Artocarpus lakoocha Roxb. Bangkok:Chulalongkorn University;
Penpun Wetwitayaklung. (1994) Chemical constituents from the heartwood of Artocarpus lakoocha Roxb (รายงานผลงานวิจัย). Chulalongkorn University:Bangkok.
Penpun Wetwitayaklung. Chemical constituents from the heartwood of Artocarpus lakoocha Roxb. Bangkok:Chulalongkorn University, 1994.
Penpun Wetwitayaklung. (1994) Chemical constituents from the heartwood of Artocarpus lakoocha Roxb (รายงานผลงานวิจัย). Chulalongkorn University:Bangkok.