APA (7th ed.) Zitazioa

Play Matters. National Association of Toy & Leisure Libraries.

Chicago Style (17th ed.) Zitazioa

Play Matters. National Association of Toy & Leisure Libraries.

MLA (9th ed.) Zitazioa

Play Matters. National Association of Toy & Leisure Libraries.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.