Ohlsen, B. (2019). Walking Portland: 33 tours of Stumptown's funky neighborhoods, historic landmarks, parks, farmers markets, and brewpubs (Second Edition.). Wilderness Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOhlsen, Becky. Walking Portland: 33 Tours of Stumptown's Funky Neighborhoods, Historic Landmarks, Parks, Farmers Markets, and Brewpubs. Second Edition. Birmingham, Alabama: Wilderness Press, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रOhlsen, Becky. Walking Portland: 33 Tours of Stumptown's Funky Neighborhoods, Historic Landmarks, Parks, Farmers Markets, and Brewpubs. Second Edition. Wilderness Press, 2019.
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