APA Style

Churchland, P, M., Churchland, P, S. (1998.). On the contrary :critical essays, 1987-1997 . Cambridge, Mass. :: MIT Press,.

MLA Style

Churchland, Paul, M.,., Churchland, Patricia, Smith.. "On the contrary :critical essays, 1987-1997". Cambridge, Mass. :: MIT Press,, 1998.. Text.