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Much of what you will find here on indigenous citation practice comes from research guides created by the Xwi7xwa Library at the University of British Columbia. From their website: "Xwi7xwa Library is a centre for academic and community Indigenous scholarship. Its collections and services reflect Aboriginal approaches to teaching, learning, and research." Some useful guides in their collection:
Also created at the University of British Columbia, but not in the Xwi7xwa Library, is this guide to First Nations and Indigenous Art.