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Gaya APA
Practice and Progress : An Integrated Course for Pre-Intermediate Students. (1990).
Singapore:
Longman Group.
Gaya Chicago
Practice and Progress : An Integrated Course for Pre-Intermediate Students.
.
Singapore:
Longman Group,
1990.
Text.
Gaya MLA
Practice and Progress : An Integrated Course for Pre-Intermediate Students.
.
Singapore:
Longman Group,
1990.
Text.
Gaya Turabian
Practice and Progress : An Integrated Course for Pre-Intermediate Students.
Singapore:
Longman Group,
1990.
Print.