Dr Richards Recommends Dr Richards highly recommends this article by Professor Gregory Hadley. It reports on one of the few empirical studies that have been conducted to assess the effectiveness of global English textbooks, using the the Interchange series as an example. Here is a link to the PDF of the article… Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Click to share on LinkedIn (Opens in new window) LinkedIn Click to email a link to a friend (Opens in new window) Email Related News, Reviews, Work