1、New Scientist 这本杂志被用到的频率最高,例如剑四中的Lost for Words, Play is a Serious Business,剑五中的What’s So Funny?, Flawed Beauty: the Problem with Toughened Glass,与剑六中的多篇文章 Australia’s Sporting Success, Climate Change and the Inuit, Graying Population Stays in the Pink, Do Literate Women Make Better Mothers?
2、The Economist 列居其次,例如剑五中的The Truth about the Environment, 剑六里的Delivering the Goods
3、American Scientist和Scientific American的两个主要中有美国学术期刊,像剑五的Disappearing Delta与剑六的The Search for Anti-aging Pills。