APA

Blokpoel H., Naranjo Henao L. G. & Tessier G. D.Immature little gull in South America. : .

Chicago

Blokpoel Hans, Naranjo Henao Luis Germán and Tessier Gaston D.Immature little gull in South America. : .

Harvard

Blokpoel H., Naranjo Henao L. G. and Tessier G. D.Immature little gull in South America. : .

MLA

Blokpoel Hans, Naranjo Henao Luis Germán and Tessier Gaston D.: . .