They aren't, until I call them performing the subject in American literature / [electronic resource] :
Enikő Bollobás.
- Frankfurt am Main ; New York : Peter Lang, c2010.
- 233 p.
Includes bibligraphical references and index.
Electronic reproduction. Palo Alto, Calif. : ebrary, 2011. Available via World Wide Web. Access may be limited to ebrary affiliated libraries.
American literature--History and criticism.--20th century Performance in literature. American literature--Themes, motives.