APA aipamena

Margalef, R., & Kinne, O. (1997). Our biosphere. Ecology Institute.

Chicago Style aipamena

Margalef, R., and O. Kinne. Our Biosphere. Oldendorf/Luhe, Germany: Ecology Institute, 1997.

MLA aipamena

Margalef, R., and O. Kinne. Our Biosphere. Ecology Institute, 1997.