Knox, P. L., & Mayer, H. (2013). Small town sustainability: Economic, social, and environmental innovation (Second Edition, Revised and Expanded.). Birjhauser.
Lua i Stíl Chicago (17ú heag.)Knox, Paul L., agus Heike Mayer. Small Town Sustainability: Economic, Social, and Environmental Innovation. Second Edition, Revised and Expanded. Basel: Birjhauser, 2013.
Lua MLA (9ú heag.)Knox, Paul L., agus Heike Mayer. Small Town Sustainability: Economic, Social, and Environmental Innovation. Second Edition, Revised and Expanded. Birjhauser, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.