睿语达. (2010). 铿锵之声: Words that enlighten people. 世界知识出版社.
Dyfyniad Arddull Chicago睿语达. 铿锵之声: Words That Enlighten People. 世界知识出版社, 2010.
Dyfyniad MLA睿语达. 铿锵之声: Words That Enlighten People. 世界知识出版社, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.