杨旭. (2010). 世界文明奇迹: Civilization wonders of the world. 汕头大学出版社.
Dyfyniad Arddull Chicago杨旭. 世界文明奇迹: Civilization Wonders of the World. 汕头大学出版社, 2010.
Dyfyniad MLA杨旭. 世界文明奇迹: Civilization Wonders of the World. 汕头大学出版社, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.