Lua APA (7ú heag.)

(美)房龙(VanLoo. (2011). 文明的开端. 北方妇女儿童出版社.

Lua i Stíl Chicago (17ú heag.)

(美)房龙(VanLoo. 文明的开端. 北方妇女儿童出版社, 2011.

Lua MLA (8ú heag.)

(美)房龙(VanLoo. 文明的开端. 北方妇女儿童出版社, 2011.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.