Oposa, A. A., Jr. (2003). The laws of nature and other stories. The Law of Nature Foundation.
Lua i Stíl Chicago (17ú heag.)Oposa, Antonio A., Jr. The Laws of Nature and Other Stories. Muntinlupa City: The Law of Nature Foundation, 2003.
Lua MLA (9ú heag.)Oposa, Antonio A., Jr. The Laws of Nature and Other Stories. The Law of Nature Foundation, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.