Cita APA

World Resources Institute. (1993). The 1993 Information please environmental almanac. Houghton Mifflin Co.

Citación estilo Chicago

World Resources Institute. The 1993 Information Please Environmental Almanac. Boston: Houghton Mifflin Co, 1993.

Cita MLA

World Resources Institute. The 1993 Information Please Environmental Almanac. Houghton Mifflin Co, 1993.

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