APA aipamena

PARRAGON BOOKS. (2019). OUR WORLD INCREDIBLE BUT TRUE FACTS (2016 Ed.). PARRAGON BOOK PUBLISHERS.

Chicago Style aipamena

PARRAGON BOOKS. OUR WORLD INCREDIBLE BUT TRUE FACTS. 2016 Ed. LONDON: PARRAGON BOOK PUBLISHERS, 2019.

MLA aipamena

PARRAGON BOOKS. OUR WORLD INCREDIBLE BUT TRUE FACTS. 2016 Ed. PARRAGON BOOK PUBLISHERS, 2019.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.