Reference sources are ideal for discovering a topic and its importance within a wider area of study. Many reference sources are encyclopedias and dictionaries. The subject-specific reference sources linked below are particularly valuable for theology students and researchers. The linked entries will help you learn more about the Council of Nicaea.
All of the entries linked below are from the New Catholic Encyclopedia (2nd edition, Gale, 2009).
Journal articles offer more focused, lengthier analyses than reference sources. The article linked below provides general information on the Nicene Creed in the form of an article published in a journal.