Sohn (1959), citing Wang Yingling's 王應臨Yuhai (玉海 "Sea of Jade"; completed before 1296), 63.23b. Sohn, Pow-key (1959). "Early Korean Printing". Journal of the American Oriental Society. 79 (2): 99–103. doi:10.2307/595851. JSTOR595851.
jstor.org
Sohn (1959), citing Wang Yingling's 王應臨Yuhai (玉海 "Sea of Jade"; completed before 1296), 63.23b. Sohn, Pow-key (1959). "Early Korean Printing". Journal of the American Oriental Society. 79 (2): 99–103. doi:10.2307/595851. JSTOR595851.