Gaya APA

Morrison, K., Dunne, L. (2012). Cambridge IGCSE Mathematics: Core Practice Book (4th printing, 2015). United Kingdom: Cambridge University Press.

Gaya MLA

Morrison, Karen., Dunne, Lucille. "Cambridge IGCSE Mathematics: Core Practice Book". 4th printing, 2015 United Kingdom: Cambridge University Press, 2012. Text.