(古罗马)西塞罗(MarcusTulliusCicero)著. (2007). 西塞罗三论：论友谊·论老年·论责任：英中文双语读本. 团结出版社.
Lua i Stíl Chicago (17ú heag.)(古罗马)西塞罗(MarcusTulliusCicero)著. 西塞罗三论：论友谊·论老年·论责任：英中文双语读本. 团结出版社, 2007.
Lua MLA (8ú heag.)(古罗马)西塞罗(MarcusTulliusCicero)著. 西塞罗三论：论友谊·论老年·论责任：英中文双语读本. 团结出版社, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.