EX4.post link of these 2 book in your blog

1. http://welcomechange.co.il/pdf/download/id=928218&type=file
2.     http://jpkc.fudan.edu.cn/picture/article/255/1c/8c/8a256ed84a98beafbd225ea6936e/43f6d2e4-9479-4872-9970-f70754fce954.pdf