ebrary, Inc, Ouderkirk, W., & Hill, J. (2002). Land, value, community: Callicott and environmental philosophy. State University of New York Press.
Lua i Stíl Chicago (17ú heag.)ebrary, Inc, Wayne Ouderkirk, agus Jim Hill. Land, Value, Community: Callicott and Environmental Philosophy. Albany: State University of New York Press, 2002.
Lua MLA (9ú heag.)ebrary, Inc, et al. Land, Value, Community: Callicott and Environmental Philosophy. State University of New York Press, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.