APA

Marín A, Stiles F. G., .Notes on the biology of the spot-fronted swift. : .

Chicago

Marín A, Stiles F Gary, .Notes on the biology of the spot-fronted swift. : .

Harvard

Marín A, Stiles F. G., .Notes on the biology of the spot-fronted swift. : .

MLA

Marín A, Stiles F Gary, .: . .