G. A. Cohen, Finding Oneself in the Other, 2012: Chapter 5: “Complete Bullshit.” This chapter is a reprint of an article which appeared in Sarah Buss and Lee Overton, eds., Contours of Agency: Themes from the Philosophy of Harry Frankfurt, 2002. In this festschrift, Frankfurt replied: “Reply to G. A. Cohen.” In this piece, Cohen marks the important distinction between a bullshitter and bullshit.
See also: William Lewis, “Is there less bullshit in For Marx then in Reading Capital?”