Pierce, W. M., & Bone, A. H. (1981). Oregon cattleman/governor, congressman: Memoirs and times of Walter M. Pierce. Oregon Historical Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPierce, Walter Marcus, और Arthur H. Bone. Oregon Cattleman/governor, Congressman: Memoirs and Times of Walter M. Pierce. Portland, Or.: Oregon Historical Society, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPierce, Walter Marcus, और Arthur H. Bone. Oregon Cattleman/governor, Congressman: Memoirs and Times of Walter M. Pierce. Oregon Historical Society, 1981.
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