皮克林 & 赖金怡. (2008). 8小时+: How to make the most of your workday. 陕西师范大学出版社.
Lua i Stíl Chicago (17ú heag.)皮克林 agus 赖金怡. 8小时+: How to Make the Most of Your Workday. 陕西师范大学出版社, 2008.
Lua MLA (8ú heag.)皮克林 agus 赖金怡. 8小时+: How to Make the Most of Your Workday. 陕西师范大学出版社, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.