APA

Alexandra Parsons, .Tierra. Bogotá, Colombia : Educar, 2004: .

Chicago

Alexandra Parsons, .Tierra. Bogotá, Colombia : Educar, 2004: .

Harvard

Alexandra Parsons, .Tierra. Bogotá, Colombia : Educar, 2004: .

MLA

Alexandra Parsons, .Bogotá, Colombia : Educar, 2004: . .