Pacific Northwest Farm Trio. (1927). Agricultural charts: Washington, Idaho, Oregon. Pacific Northwest Farm Trio.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPacific Northwest Farm Trio. Agricultural Charts: Washington, Idaho, Oregon. Spokane, Wash.: Pacific Northwest Farm Trio, 1927.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPacific Northwest Farm Trio. Agricultural Charts: Washington, Idaho, Oregon. Pacific Northwest Farm Trio, 1927.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.