Gaya APA

Earth Summit: convention on desertification. United Nations Conference on Environment and Development, Rio de Janeiro Brazil, 3-14 June 1992. . (1994). New York: New York United Nations.

Gaya MLA

Earth Summit: convention on desertification. United Nations Conference on Environment and Development, Rio de Janeiro Brazil, 3-14 June 1992. . . New York: New York United Nations, 1994. Buku.