APA aipamena

Astley, N., & Baker, M. (2011). Peppa's washing day. London: Ladybird.

Chicago Style aipamena

Astley, Neville, και Mark Baker. Peppa's Washing Day. London: Ladybird, 2011.

MLA aipamena

Astley, Neville, και Mark Baker. Peppa's Washing Day. London: Ladybird, 2011.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.