Gaya APA
Hallows, richard, Lisboa, martin, Unwin, mark. (2013).
IELTS Express : Upper Intermediate Coursebook (2nd Edition).
United Kingdom:
Cengage Learning.
Gaya Chicago
Hallows, richard, Lisboa, martin, Unwin, mark.
IELTS Express : Upper Intermediate Coursebook.
2nd Edition
United Kingdom:
Cengage Learning,
2013.
Monograf.
Gaya MLA
Hallows, richard, Lisboa, martin, Unwin, mark.
IELTS Express : Upper Intermediate Coursebook.
2nd Edition
United Kingdom:
Cengage Learning,
2013.
Monograf.
Gaya Turabian
Hallows, richard, Lisboa, martin, Unwin, mark.
IELTS Express : Upper Intermediate Coursebook.
2nd Edition
United Kingdom:
Cengage Learning,
2013.
Monograf.