Gaya APA

Poskitt, K. (2010). Murderous Maths : Savage Shapes-It's maths with the laughs added in . London: Scholastic Children Books.

Gaya MLA

Poskitt, Kjartan. "Murderous Maths : Savage Shapes-It's maths with the laughs added in". London: Scholastic Children Books, 2010. Text.