Zach Dundas: Burb Battle. Portland Monthly, 2010. szeptember 13. (Hozzáférés: 2014. február 16.) „These particular rails slice through Dunthorpe, the most legendarily exclusive neighborhood in Portland (or rather, unincorporated Multnomah County, as the mansion-studded enclave—home base of actor Danny Glover, the occasional Trail Blazer, and other notables—refuses to join the city).”
snaccooperative.org
SNAC (angol nyelven). (Hozzáférés: 2017. október 9.)
