Cita APA

World Resources Institute. (1991). The ... information please environmental almanac. Houghton Mifflin Co.

Citación estilo Chicago

World Resources Institute. The ... Information Please Environmental Almanac. Boston: Houghton Mifflin Co, 1991.

Cita MLA

World Resources Institute. The ... Information Please Environmental Almanac. Houghton Mifflin Co, 1991.

Warning: These citations may not always be 100% accurate.