Butler explicitly formulates her theory of performativity in the final pages of Gender Trouble, specifically in the final section of her chapter "Subversive Bodily Acts" entitled "Bodily Inscriptions, Performative Subversions" and elaborates performativity in relation to the question of political agency in her conclusion, "From Parody to Politics." Vedere Judith Butler, Gender Trouble: Feminism and the Subversion of Identity, New York, Routledge, 1999 [1990], pp. 171-90.
Judith Butler, Concluding Unscientific Postscript, in Gender Trouble: Feminism and the Subversion of Identity, New York, Routledge, 1999 [1990], pp. 135-41.
