Cha, O. (2007). Sail as wing: Ouhi Cha. Ouhi Cha.
Lua i Stíl Chicago (17ú heag.)Cha, Ouhi. Sail as Wing: Ouhi Cha. Korea: Ouhi Cha, 2007.
Lua MLA (8ú heag.)Cha, Ouhi. Sail as Wing: Ouhi Cha. Ouhi Cha, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.