This is a MUST READ for students to understand the topic and therefore be able to list arguments for the benefits and limitations of each theory. Of course, you can make great points if you tie your arguments to specific directors and genres like John Ford and Clint Eastwood westerns.
"An Audience with Clint Eastwood" by Philip French, published on 27th of February 2007.
The discussion touches on "The Outlaw Josey Wales" and a number of Eastood's other film. French is an incisive critic and he gets Clint to reveal which directors and films he most admires and which also influenced him.
"Our conversation ranged widely, taking in the director's Iwo Jima companion pieces, his collaborations with Leone and Siegel and his masterpiece, The Outlaw Josey Wales. It even included a duet."