(1978). Union guide to photograph collections of the Pacific Northwest. Oregon Historical Society.
Chicago-Zitierstil (17. Ausg.)Union Guide to Photograph Collections of the Pacific Northwest. Oregon Historical Society, 1978.
MLA-Zitierstil (8. Ausg.)Union Guide to Photograph Collections of the Pacific Northwest. Oregon Historical Society, 1978.
警告：这些引文格式不一定是100％准确.