Du Plessis has written or translated several books on philosophy and literature, as well as articles, book chapters and encyclopedia entries. He has published on linguistics, translation and historical/cultural studies in such journals and encyclopedias as Revue de Littérature Comparée, Poe Studies, European Studies Journal, Dalhousie French Studies, Cahiers du CIRhill, Short Story Criticism, The Linacre Quarterly, Les Amis de Flaubert, The World Education Encyclopedia, ALFA, and the World Press Encyclopedia.
