1-3 of 3 Books
Yun Sŏn-do wa Pogilto
By Yŏng-hun Sin
Pogilto Yun Kosan yujŏk
By Wi Yun
Wando Pogil-to Yun Sŏn-do yujŏk
By Chŏnnam Munhwajae Yŏn'guwŏn