Plumb, G. A. (1983). Waterfalls of the Pacific Northwest. Writing Works.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPlumb, Gregory Alan. Waterfalls of the Pacific Northwest. Seattle, Wash.: Writing Works, 1983.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPlumb, Gregory Alan. Waterfalls of the Pacific Northwest. Writing Works, 1983.
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