 | This user is a student editor in Central_Michigan_University/African_Art_(Fall_2019). |
Your sources are generally good, but you need to format them consistently with full information. (For example, the Schwartz is formatted like an article, but it is a book; the Northern book doesn’t have a title, etc.)
There’s also more out there, but you may need to search with different terms. Try: Cross River Art. Try: Grassfields Art.
There’s more out there than what you are capturing. Redo your book and article search to get more sources and reformat what you have.