奥姆. (2009). 地球·火星: Let's explore Earth, Let's explore Mars. 四川少年儿童出版社.
Lua i Stíl Chicago (17ú heag.)奥姆. 地球·火星: Let's Explore Earth, Let's Explore Mars. 四川少年儿童出版社, 2009.
Lua MLA (8ú heag.)奥姆. 地球·火星: Let's Explore Earth, Let's Explore Mars. 四川少年儿童出版社, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.