姜玲 & 贺湘辉. (2007). 接线员工作手册: Switchboard operator workbook. 广东经济出版社.
Lua i Stíl Chicago (17ú heag.)姜玲 agus 贺湘辉. 接线员工作手册: Switchboard Operator Workbook. 广东经济出版社, 2007.
Lua MLA (8ú heag.)姜玲 agus 贺湘辉. 接线员工作手册: Switchboard Operator Workbook. 广东经济出版社, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.