APA Style

Gould, P., Clutterbuck, M. (2011). Focusing on IELTS: Academic Practice Tests with Answer Key (2). : Macmillan.

MLA Style

Gould, Philip., Clutterbuck, Michael. "Focusing on IELTS: Academic Practice Tests with Answer Key". 2 : Macmillan, 2011. Buku SMA Athalia.