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.
Čikaški stil citiranja (17. izdanje)皮克林 i 赖金怡. 8小时+: How to Make the Most of Your Workday. 陕西师范大学出版社, 2008.
MLA način citiranja (8. izdanje)皮克林 i 赖金怡. 8小时+: How to Make the Most of Your Workday. 陕西师范大学出版社, 2008.
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