LADYBIRD BOOKS. (2020). PEPPA PIG: PEPPA LOVES OUR PLANET. LADYBIRD BOOKS.
Lua i Stíl Chicago (17ú heag.)LADYBIRD BOOKS. PEPPA PIG: PEPPA LOVES OUR PLANET. UK: LADYBIRD BOOKS, 2020.
Lua MLA (9ú heag.)LADYBIRD BOOKS. PEPPA PIG: PEPPA LOVES OUR PLANET. LADYBIRD BOOKS, 2020.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.