Gaya APA
Brook-Hart, G., Jakeman, V. (2013).
Complete IELTS 6,5-7,5: Student's Book With Answer's .
Cambridge Univ:
OReilly.
Gaya MLA
Brook-Hart, Guy., Jakeman, Vanessa.
"Complete IELTS 6,5-7,5: Student's Book With Answer's".
Cambridge Univ:
OReilly,
2013.
Text.