APA

Etter A., Wyngaarden, .Patterns of landscape transformation in Colombia, with emphasis in the Andean Region. : .

Chicago

Etter Andrés, Wyngaarden, .Patterns of landscape transformation in Colombia, with emphasis in the Andean Region. : .

Harvard

Etter A., Wyngaarden, .Patterns of landscape transformation in Colombia, with emphasis in the Andean Region. : .

MLA

Etter Andrés, Wyngaarden, .: . .