McKinney, M., & Johnson, S. (2009). Working across boundaries: People, nature, and regions. Lincoln Institute of Land Policy.
Chicago-referens (17:e uppl.)McKinney, Matthew, och Shawn Johnson. Working Across Boundaries: People, Nature, and Regions. Cambridge, Mass.: Lincoln Institute of Land Policy, 2009.
MLA-referens (9:e uppl.)McKinney, Matthew, och Shawn Johnson. Working Across Boundaries: People, Nature, and Regions. Lincoln Institute of Land Policy, 2009.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.