(2004). Great Little Fact Books: Planet Earth. MILES KELLY PUBLISHI.
Cita Chicago (17th ed.)Great Little Fact Books: Planet Earth. MILES KELLY PUBLISHI, 2004.
Cita MLA (9th ed.)Great Little Fact Books: Planet Earth. MILES KELLY PUBLISHI, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.