Gaya APA
ALEXANDER, L. G.. (1990).
Developing Skills .
London:
Longman Group Ltd..
Gaya Chicago
ALEXANDER, L. G..
Developing Skills.
London:
Longman Group Ltd.,
1990.
Text.
Gaya MLA
ALEXANDER, L. G..
Developing Skills.
London:
Longman Group Ltd.,
1990.
Text.
Gaya Turabian
ALEXANDER, L. G..
Developing Skills.
London:
Longman Group Ltd.,
1990.
Print.