OEC著. (2009). LiLi奇幻之旅．4，天空之城故事：小学二年级．4，City in the sky：grade 2. 电子工业出版社.
Lua i Stíl Chicago (17ú heag.)OEC著. LiLi奇幻之旅．4，天空之城故事：小学二年级．4，City in the Sky：grade 2. 电子工业出版社, 2009.
Lua MLA (8ú heag.)OEC著. LiLi奇幻之旅．4，天空之城故事：小学二年级．4，City in the Sky：grade 2. 电子工业出版社, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.