格雷 & 哈里斯. (2011). 人人都有一块幸运石: Reallionaire nine steps to becoming rich from the inside out. 人民日报出版社.
Lua i Stíl Chicago (17ú heag.)格雷 agus 哈里斯. 人人都有一块幸运石: Reallionaire Nine Steps to Becoming Rich from the Inside Out. 人民日报出版社, 2011.
Lua MLA (8ú heag.)格雷 agus 哈里斯. 人人都有一块幸运石: Reallionaire Nine Steps to Becoming Rich from the Inside Out. 人民日报出版社, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.