APA

Bangs O., . (1903). Description of a new race of the great blue heron from the Galapagos Islands. : .

Chicago

Bangs O, . 1903. Description of a new race of the great blue heron from the Galapagos Islands. : .

Harvard

Bangs O., . (1903). Description of a new race of the great blue heron from the Galapagos Islands. : .

MLA

Bangs O, . Description of a new race of the great blue heron from the Galapagos Islands. : . 1903.