APA

Barrera Oro E. R., Casaux R. J., .Fish as diet of the blue-eyed shag, Phalacrocorax atriceps bransfieldensis at Half-Moon island, South Shetland islands. : .

Chicago

Barrera Oro Esteban R, Casaux Ricardo J, .Fish as diet of the blue-eyed shag, Phalacrocorax atriceps bransfieldensis at Half-Moon island, South Shetland islands. : .

Harvard

Barrera Oro E. R., Casaux R. J., .Fish as diet of the blue-eyed shag, Phalacrocorax atriceps bransfieldensis at Half-Moon island, South Shetland islands. : .

MLA

Barrera Oro Esteban R, Casaux Ricardo J, .: . .