APA

Alvarez López H., Kattan G. H., .Notes on the conservation status of resident diurnal raptors of the middle Cauca Valley, Colombia. : .

Chicago

Alvarez López Humberto, Kattan Gustavo H, .Notes on the conservation status of resident diurnal raptors of the middle Cauca Valley, Colombia. : .

Harvard

Alvarez López H., Kattan G. H., .Notes on the conservation status of resident diurnal raptors of the middle Cauca Valley, Colombia. : .

MLA

Alvarez López Humberto, Kattan Gustavo H, .: . .