APA

Gardner O. T., Engelman R., . (1999). Forest population, consumption and wood resources futures. Washington: Population Action International.

Chicago

Gardner Outlaw Tom, Engelman Robert, . 1999. Forest population, consumption and wood resources futures. Washington: Population Action International.

Harvard

Gardner O. T., Engelman R., . (1999). Forest population, consumption and wood resources futures. Washington: Population Action International.

MLA

Gardner Outlaw Tom, Engelman Robert, . Forest population, consumption and wood resources futures. Washington: Population Action International. 1999.