Fothergill, A., & Berlowitz, V. (2012). Frozen planet: A world beyond imagination. Firefly Books Ltd. ; Firefly Books (U.S.), Inc..
Cita Chicago Style (17a ed.)Fothergill, Alastair, y Vanessa Berlowitz. Frozen Planet: A World Beyond Imagination. Richmond Hill, Ont. : Buffalo, NY: Firefly Books Ltd. ; Firefly Books (U.S.), Inc., 2012.
Cita MLA (8a ed.)Fothergill, Alastair, y Vanessa Berlowitz. Frozen Planet: A World Beyond Imagination. Firefly Books Ltd. ; Firefly Books (U.S.), Inc., 2012.
Precaución: Estas citas no son 100% exactas.