https://ocw.mit.edu/courses/economics/14-02-principles-of-macroeconomics-spring-2014/
https://ocw.mit.edu/courses/economics/14-06-intermediate-macroeconomic-theory-spring-2004/
https://ocw.mit.edu/courses/economics/14-54-international-trade-fall-2016/
https://ocw.mit.edu/courses/economics/14-581-international-economics-i-spring-2013/
Ответ предполагает не кучу тупорылых ссылок, а наличие текста.