阿西莫夫. (2018). 诺比与外星动物园: Norby and the invaders. 接力出版社.
Lua i Stíl Chicago (17ú heag.)阿西莫夫. 诺比与外星动物园: Norby and the Invaders. 接力出版社, 2018.
Lua MLA (8ú heag.)阿西莫夫. 诺比与外星动物园: Norby and the Invaders. 接力出版社, 2018.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.