Margalef, R., & Kinne, O. (1997). Our biosphere. Ecology Institute.
Lua i Stíl Chicago (17ú heag.)Margalef, R., agus O. Kinne. Our Biosphere. Oldendorf/Luhe, Germany: Ecology Institute, 1997.
Lua MLA (9ú heag.)Margalef, R., agus O. Kinne. Our Biosphere. Ecology Institute, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.