Pojman, L. P. (1998). Environmental ethics: Readings in theory and application (2nd ed.). Wadsworth.
Lua i Stíl Chicago (17ú heag.)Pojman, Louis P. Environmental Ethics: Readings in Theory and Application. 2nd ed. Belmont, CA: Wadsworth, 1998.
Lua MLA (9ú heag.)Pojman, Louis P. Environmental Ethics: Readings in Theory and Application. 2nd ed. Wadsworth, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.