APA

Estados Unidos, . (1990). Greenhouse gas emissions and the developing countries. Washington, DC: U.S.A.I.D.

Chicago

Estados Unidos, . 1990. Greenhouse gas emissions and the developing countries. Washington, DC: U.S.A.I.D.

Harvard

Estados Unidos, . (1990). Greenhouse gas emissions and the developing countries. Washington, DC: U.S.A.I.D.

MLA

Estados Unidos, . Greenhouse gas emissions and the developing countries. Washington, DC: U.S.A.I.D. 1990.