Gellel, A. 2017, "Putting Catholic Religious Education on the Map", Revista Pistis & Praxis: Teologia e Pastoral, vol. 9, no. 3, pp. 699-720.
Gellel, A. & Rossi, C. 2017, Of Lamps & Clay Vessels: towards the Validation of Non-Formal and Informal Learning of Youth Leaders in church Youth Groups, Pastoral Formation Institute and Malta Catholic Youth Network, Malta.
Gellel, A. & Imbarack Dagach, P. 2016, "La educación como un ministerio central de la comunidad católica.", PEL Pensiamento Educativo, vol. 53, no. 2, pp. 1-4.
Buchanan, M.T. & Gellel, A. (eds) 2015, Global Perspectives on Catholic Religious Education in Schools, Springer, Netherlands.
Gellel, A. 2015, "The Interdisiplinary Imperative of Catholic Religious Eductaion" in Global Perspectives on Catholic Religious Education in Schools, eds. M.T. Buchanan & A. Gellel, Springer, Cham, Switzerland, pp. 23.
Gellel, A. 2014, "An Emerging Approach to Spiritual Development through Religious Education in Maltese Schools
" in Global Perspectives on Spiritual Education
, eds. J. Watson, M. de Souza & A. Trousdale, Routledge, New York, pp. 58-70.
Gellel, A. 2013, "Popular Music as a resource for the Religious Education Classroom. A study through Lady Gaga's Judas", Religious Education Journal of Australia, vol. 29, no. 1, pp. 28-33.
Gellel, A. 2013, "Responding to the challengs of Globalization through an education anchored in Christian anthropology" in Leaderships and Religious Schools: International perspectives and challenges, ed. M.T. Buchanan, Bloomsbury Academic, New York, pp. 13-31.
Gellel, A. 2013, "Traces of Spirituality in the Lady Gaga Phenomenon", International Journal of Children's Spirituality, vol. 18, no. 2, pp. 214-226.
Gellel, A. & Sultana, M. 2012, "Aspects of Feminine Spirituality in the Maltese Village Festa" in Religious Experience. North and South, ed. R. Gothoni, Peter Lang, Bern, Swizerland, pp. 199-229.
Gellel, A. 2012, "The spiritual life of Maltese adolescents attending Catholic Schools" in New Perspectives on Religious and Spiritual Education, eds. T. van der Zee & T. Lovat J., Waxmann, Munster, pp. 235-250.
Gellel, A. 2011, "Adaptive Religious Education at the service of inventiveness: A scientific way of being creative and effective in Religious Education", The Person and the Challenges: The Journal of Theology, Education Canon Law and Social Studies Inspired by Pope John Paul II, vol. 1, no. 1, pp. 99-111.
Gellel, A. & Buchanan, M.T. 2011, "The Impact of cultural religious values upon pre-service teachers perceptions of their role as educators in Catholic religious schools", Journal of Beliefs and Values, vol. 32, no. 2, pp. 317-327.
Gellel, A. 2010, "Teachers as Key Players in Values Education: Implications for Teacher Formation" in International Research Handbook on Values Education and Student Wellbeing, eds. T. Lovat, R. Toomey & N. Clement, Springer, Netherlands, pp. 163-177.
Gellel, A. 2010, "Nurturing Spirituality through Symbol Literacy in Religious Education", Journal of Religious Education, vol. 58, no. 3, pp. 44-51.
Gellel, A. & Sultana, M. 2008, "Leaping from Non Secular to Post Secular. A Study of the Maltese Scenario" in Europe as a postsecular Society. Reflections on Religion and Societal Cohesion, eds. H. Ziebertz & U. Reigel, Lit Verlag, Berlin, pp. 111-126.