Gaya APA

, ., [et.al], I, B, I, .. (2009). Level up maths: level 3-4 . London: London: Heinemann, 2009.

Gaya MLA

, ., [et.al], I., Boote,, Ian, .... "Level up maths: level 3-4". London: London: Heinemann, 2009, 2009. .