Small, E. S., & Johnson, T. W. (2013). Direct theory: Experimental motion pictures as major genre (2nd ed.). Southern Illinois University Press.

Small, Edward S., and Timothy W. Johnson. Direct Theory: Experimental Motion Pictures as Major Genre. 2nd ed. Carbondale: Southern Illinois University Press, 2013.

Small, Edward S., and Timothy W. Johnson. Direct Theory: Experimental Motion Pictures as Major Genre. 2nd ed. Southern Illinois University Press, 2013.