Financing Small Enterprise Proceedings of a Seminar Organized by The Netherlands Development Finance Company (FMO) Harper Malcolm Heftet / 1986 / Engelsk
Epitaph for an Era Politics and Rhetoric in the Carolingian World de Jong, Mayke Heftet / 2020 / Engelsk
Foundations of a Sustainable Market Economy Guiding Principles for Change Boersma-de Jong, Margreet Heftet / 2023 / Engelsk
Penitential State Authority and Atonement in the Age of Louis the Pious, 814–840 de Jong, Mayke Innbundet / 2009 / Engelsk
Penitential State Authority and Atonement in the Age of Louis the Pious, 814–840 de Jong, Mayke Heftet / 2011 / Engelsk
Epitaph for an Era Politics and Rhetoric in the Carolingian World de Jong, Mayke Innbundet / 2019 / Engelsk
