Chongkon Sumpanwatanakun. 1989. Michael reaction of &-chloro sulfonyl carbanion. Bangkok:Mahidol University;
Chongkon Sumpanwatanakun. (1989) Michael reaction of &-chloro sulfonyl carbanion (รายงานผลงานวิจัย). Mahidol University:Bangkok.
Chongkon Sumpanwatanakun. Michael reaction of &-chloro sulfonyl carbanion. Bangkok:Mahidol University, 1989.
Chongkon Sumpanwatanakun. (1989) Michael reaction of &-chloro sulfonyl carbanion (รายงานผลงานวิจัย). Mahidol University:Bangkok.