APA

Cavelier J., Etter R A., .Deforestation of montane forests in Colombia as a result of illegal plantations of opium (<papaver somniferum>). : .

Chicago

Cavelier Jaime, Etter R Andrés, .Deforestation of montane forests in Colombia as a result of illegal plantations of opium (<papaver somniferum>). : .

Harvard

Cavelier J., Etter R A., .Deforestation of montane forests in Colombia as a result of illegal plantations of opium (<papaver somniferum>). : .

MLA

Cavelier Jaime, Etter R Andrés, .: . .