Gaya APA
Lougheed, Lin. (2013).
IELTS (International English Language Testing System)(edisi 3) (3rd ed.).
United states:
Barron\'s.
Gaya Chicago
Lougheed, Lin.
IELTS (International English Language Testing System)(edisi 3).
3rd ed.
United states:
Barron\'s,
2013.
Text.
Gaya MLA
Lougheed, Lin.
IELTS (International English Language Testing System)(edisi 3).
3rd ed.
United states:
Barron\'s,
2013.
Text.
Gaya Turabian
Lougheed, Lin.
IELTS (International English Language Testing System)(edisi 3).
3rd ed.
United states:
Barron\'s,
2013.
Print.