Hanmal aeguk kyemong undong ŭi sahoesaSin, Yong-ha., Willam Whitney Steuck, Yŏng Min · First published 2003Open the Tome
21-segi Hanʾguk kwa chʻoe sŏnjinʾguk palchŏn chŏllyakSin, Yong-ha. · First published 1995Open the Tome
Hanʾguk kŭndae minjokchuŭi ŭi hyŏngsŏng kwa chŏnʾgaeSin, Yong-ha. · First published 1987Open the Tome