(美国英语). [永久失效連結] Quick Cryptid Snippet: Ogua The Monongahela River,... - The Pine Barrens Institute. The Pine Barrens Institute. [2018-06-14]. [永久失效連結]
Turning the Tables on Assimilation: Oglala Lakotas and the Pine Ridge Day Schools 1889–1920s. Western Historical Quarterly. 2002, 33 (4): 407–430. JSTOR 4144766