APA

Hailman J. P., . (1963). Why is the Galápagos lava gull the color of lava?. : .

Chicago

Hailman J P, . 1963. Why is the Galápagos lava gull the color of lava?. : .

Harvard

Hailman J. P., . (1963). Why is the Galápagos lava gull the color of lava?. : .

MLA

Hailman J P, . Why is the Galápagos lava gull the color of lava?. : . 1963.