APA

Harpp K. S., Wirth K. R. & Korich D. J. (2002). Northern Galápagos province. : .

Chicago

Harpp Karen S, Wirth Karl R and Korich Daniel J. 2002. Northern Galápagos province. : .

Harvard

Harpp K. S., Wirth K. R. and Korich D. J. (2002). Northern Galápagos province. : .

MLA

Harpp Karen S, Wirth Karl R and Korich Daniel J. Northern Galápagos province. : . 2002.