(1st edition co- authored with Tanya Sienko) 2nd edition: (Honolulu: University of Hawai'i Press, 2008). 3rd edition: (Honolulu: University of Hawai'i Press, 2013). German adaptation: (with Robert Rauther). Die Kanji lernen und behalten iii: Schrift zeichen für den fortgeschrittenen Gebrauch (Frankfurt: Klostermann Verlag, 2013). Remembering the Kana: A Guide to Reading and Writing the Japanese Syllabaries in 3 hours each [Combined edition] (Tokyo: Japan Publications Trading Co., 2001; 2nd ed., 2nd printing, 2005). 3rd edition: (Honolulu: University of Hawai'i Press, 2007; 4th printing, 2015). Spanish adaptation: (with Marc Bernabé and Verònica Calafell). Kana para recordar: Curso mnemoténico para el aprendizaje de los silabarios japoneses (Barcelona: Editorial Herder, 2003; 3rd printing, 2008). German adaptation: (with Klaus Gresbrand). Die Kana lernen und behalten. Die japanische Silbenschrift lesen und schreiben in je drei Stunden (Frankfurt am Main: Vittorio Klostermann Verlag, 2009, 3rd printing). Dutch adaptation: (with Sarah Van Camp). Kana. Snel Japan's leren lezen en schrijven (Antwerpen: Garant, 2009). Filósofos de la nada: Un ensayo sobre la escuela de Kioto (Barcelona: Editorial Herder, 2002). Philosophers of Nothingness: An Essay on the Kyoto School (Honolulu: University of Hawai'i Press, 2001; 2nd printing, 2004). rumanian translation: (trad. N. I. Maris si Mona Mamulea). Scoala loso ca de la Kyoto (Bucharest: Editura Merc Serv, 2003). Italian translation: (trad. a cura di Enrico Fongaro, Carlo Saviani e Tiziano Tosolini). Filoso del nulla (Palermo: L'Epos, 2007). Bosnian translation: (trad. Nevad Katehran). Filozo ništavila: Esej o Kyoto školi (Sarajevo: Kult-B, 2007), with a new Preface (13–19). French translation: (trans. Bernard Stevens, Jacynthe Tremblay, Sylvain Isaac). Les philosophes du néant: Un essai sur l'école de Kyoto (Paris: "Éditions du Cerf, 2008). Dialogues at One Inch Above the Ground: Reclamations of Belief in an Interreligious Age (New York: Crossroad, 2003). rumanian translation: (trad. N. I. Maris si Mona Mamulea). Dialoguri la câtiva centimetri deasupra pamântului: Revendicarile credintei într-o epoca interreligioasa (Bucharest: Editura Merc Serv, 2003). portuguese translation: (trad. de Maria Cecilia Campello). Diálogos a uma polegada acima da terra: Recuperação da fé num mundo inter-religioso (Rio de Janeiro: Edição Loyola, 2004). spanish translation: (trad. de Raquel Bouso García). Diálogos a una pulgada del suelo: recuperar las creencias en una época interreligiosa (Barcelona: Herder Editorial, 2004). El gemelo de Jesús: Un alumbramiento al budismo. (Barcelona: Herder Editorial, 2007). italian translation: (trad. a cura di Carlo Saviani). Il gemello di Gesù: Commento al Vangelo di Tommaso (Napoli: Il Pozzo di Giacobbe, 2007). english