Annals of the Association of American Geographers. Washington : Association of American Geographers, 1911-. Available on Internet: <http://openurl.ingenta.com/content?genre=journal&issn=0004-5608> <http://www.jstor.org/journals/00045608.html> <http://www.metapress.com/openurl.asp?genre=journal&issn=0004-5608> ISSN 0004-5608.