APA

Kattan G. H., Murcia C., .Hummingbird association with acorn woodpecker sap trees in Colombia. : .

Chicago

Kattan Gustavo H, Murcia Carolina, .Hummingbird association with acorn woodpecker sap trees in Colombia. : .

Harvard

Kattan G. H., Murcia C., .Hummingbird association with acorn woodpecker sap trees in Colombia. : .

MLA

Kattan Gustavo H, Murcia Carolina, .: . .