Gehl, J. a. S., & Svarre, B. (2013). How to study public life. Island Press.
Lua i Stíl Chicago (17ú heag.)Gehl, Jan and Svarre, agus Birgitte Svarre. How to Study Public Life. Washington, DC: Island Press, 2013.
Lua MLA (8ú heag.)Gehl, Jan and Svarre, agus Birgitte Svarre. How to Study Public Life. Island Press, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.