Gaya APA

Twenty questions and answers about the ozone layer : 2006 update, Scientific assessment of ozone depletion : 2006 / edited by Fahey D.W. (2007). : Geneva, World Meteorological Organization.

Gaya MLA

Twenty questions and answers about the ozone layer : 2006 update, Scientific assessment of ozone depletion : 2006 / edited by Fahey D.W. . : Geneva, World Meteorological Organization, 2007. Text.