Lua APA (7ú heag.)
Caro, T. M., & Girling, S. (2010). Conservation by proxy: Indicator, umbrella, keystone, flagship, and other surrogate species. Island Press.
Lua i Stíl Chicago (17ú heag.)
Caro, T. M., agus Sheila Girling. Conservation by Proxy: Indicator, Umbrella, Keystone, Flagship, and Other Surrogate Species. Washington, DC: Island Press, 2010.
Lua MLA (9ú heag.)
Caro, T. M., agus Sheila Girling. Conservation by Proxy: Indicator, Umbrella, Keystone, Flagship, and Other Surrogate Species. Island Press, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.