Coba jelasin Lihat juga dari Onggi dalam bahasa melayu dong

Changwon Jeonmun Daehak 창원전문대학 [Changwon College], "Balhyosikpumui pumjire michineun onggiui mulseongpyeongga" 발효식품의 품질에 미치는 옹기의 물성평가 [Property evaluation of onggi on the quality of fermented food]. Nongnimbu, 2004

Jeong Byeongrak. "Conversation with Onggi." Dongkwang publisher. 1998

Lee Hoonseok and Jeong Yangmo. "Onggi" Dae-won-sa. 1993

Moon Yongrin 문용린 and Oh Hyeonseok 오현석, "A study on the actual state of scarce resources and the extinctive process," Gyoyuk Gwahak Gisulbu 교육부. [Ministry of Education, Science and Technology], 2004