APA

Silver C. S., DeFries R. S., . (1990). One earth, one future: our changing global environment. Washington: National Academy Press.

Chicago

Silver Cheryl Simon, DeFries Ruth S, . 1990. One earth, one future: our changing global environment. Washington: National Academy Press.

Harvard

Silver C. S., DeFries R. S., . (1990). One earth, one future: our changing global environment. Washington: National Academy Press.

MLA

Silver Cheryl Simon, DeFries Ruth S, . One earth, one future: our changing global environment. Washington: National Academy Press. 1990.