APA

Geist D. J., McBirney A. R. & Duncan R. A. (1986). Geology and petrogenesis of lavas from San Cristóbal Island, Galápagos Archipelago. : .

Chicago

Geist Dennis J, McBirney A R and Duncan R A. 1986. Geology and petrogenesis of lavas from San Cristóbal Island, Galápagos Archipelago. : .

Harvard

Geist D. J., McBirney A. R. and Duncan R. A. (1986). Geology and petrogenesis of lavas from San Cristóbal Island, Galápagos Archipelago. : .

MLA

Geist Dennis J, McBirney A R and Duncan R A. Geology and petrogenesis of lavas from San Cristóbal Island, Galápagos Archipelago. : . 1986.