龚勋. (2012). 游遍世界: Guiding tour around whole world. 汕头大学出版社.
Lua i Stíl Chicago (17ú heag.)龚勋. 游遍世界: Guiding Tour Around Whole World. 汕头大学出版社, 2012.
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Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.