Egbule Onwuli, C. (1985). Catechetical education of the youth in the new Code of Canon Law. Pontificia Universitas Urbaniana, Facultas Juris Canonici.
Čikaški stil citiranja (17. izdanje)Egbule Onwuli, Cyprian. Catechetical Education of the Youth in the New Code of Canon Law. Romae: Pontificia Universitas Urbaniana, Facultas Juris Canonici, 1985.
MLA način citiranja (8. izdanje)Egbule Onwuli, Cyprian. Catechetical Education of the Youth in the New Code of Canon Law. Pontificia Universitas Urbaniana, Facultas Juris Canonici, 1985.
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