Island College. [19 December 2012]. (原始内容存档于2013-07-03). 维基共享资源中相关的多媒体资源:哈德逊河派 The Hudson River School, American Art Gallery The Hudson River School(页面存档备份,存于互联网档案馆)
Custom Publishing" [under "U.S. College Group (Higher Education)"] at Profile / PEARSON GENERAL INFO. Association of American Publishers, Inc. 2016 [January