Wert, F. (1992). Washington's rail-trails: A guide for walkers, bicyclists, equestrians. Mountaineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWert, Fred. Washington's Rail-trails: A Guide for Walkers, Bicyclists, Equestrians. Seattle, Wash.: Mountaineers, 1992.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWert, Fred. Washington's Rail-trails: A Guide for Walkers, Bicyclists, Equestrians. Mountaineers, 1992.
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