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北美白橡America (FNA) (Missouri Botanical Garden ) –通过eFloras.org. Quercus alba L.. IPCN Chromosome Reports. Missouri Botanical Garden . [2016-02-03] –通过Tropicos
诺斯猪笼草The 3rd Conference of the International Carnivorous Plant Society, San Francisco , USA. McPherson, S.R. & A. Robinson 2012. Field Guide to the Pitcher
植物学on Earth. Missouri Botanical Garden . 2009 [2012-03-10]. (原始内容存档于2006-06-24). Recommendation 60F. International Code of Botanical Nomenclature, Vienna
鲍尔斯堂"Cal bans returning students from dorm" (页面存档备份,存于互联网档案馆), San Francisco Chronicle, August 23, 2005 The Daily Californian 互联网档案馆的存檔,存档日期2007-03-12