Robyn R. Warhol and Diane Price Herndl. "About Feminisms". In Warhol and Herndl, Eds., Feminisms. Ibid. 1991, pp. ix-xvi


They write:

We agreed that someone should edit a comprehensive anthology of feminist criticism...We've used the plural form "feminisms, " rather than "feminism," to acknowledge the diversity of motivation, method, and experience among feminist academics. From the outside, "feminism" may appear monolithic, unified, or singularly definable. The more intimately one becomes acquainted with feminist criticism,however, the more one sees tyhe multiplicity of approaches and assumptions inside the movement...Such diversity--if fostered, as it has been in some feminist thought--can be a model for cultural heterogeneity.