APA aipamena

ELLYARD, D. L. (2003). OUR AMAZING PLANET. TIME LIFE BOOKS.

Chicago Style aipamena

ELLYARD, DAVID/ LEVY. OUR AMAZING PLANET. TIME LIFE BOOKS, 2003.

MLA aipamena

ELLYARD, DAVID/ LEVY. OUR AMAZING PLANET. TIME LIFE BOOKS, 2003.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.