Mr Clifford explaining Classical approach - http://www.youtube.com/watch?v=kzNo54d-ZoE
Mr Clifford on Classical v Keynesian - http://www.youtube.com/watch?v=HGjtcPssfCs
Roger Strickland on the Classical approach - http://www.youtube.com/watch?v=POlRuKh9ctU
Roger on the Keynesian approach - http://www.youtube.com/watch?v=7ObnvX64QWc
