执云 & 魏茂峰. (2009). 简单原本就是幸福: Happiness relies on simpleness. 光明日报出版社.
Lua i Stíl Chicago (17ú heag.)执云 agus 魏茂峰. 简单原本就是幸福: Happiness Relies on Simpleness. 光明日报出版社, 2009.
Lua MLA (8ú heag.)执云 agus 魏茂峰. 简单原本就是幸福: Happiness Relies on Simpleness. 光明日报出版社, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.