Gaya APA

Chong, P, T, L, H, C, S. (2015). Practice Tests for IELTS 2 (1). London: Harpercollins.

Gaya MLA

Chong, Peter, Travis,, Louis, Harrison,, Chia, Suan. "Practice Tests for IELTS 2". 1 London: Harpercollins, 2015. Text.