Gaya APA
Langan , John. (1996).
College Writing Skills .
London:
Mc Graw-Hill.
Gaya Chicago
Langan , John.
College Writing Skills.
London:
Mc Graw-Hill,
1996.
.
Gaya MLA
Langan , John.
College Writing Skills.
London:
Mc Graw-Hill,
1996.
.
Gaya Turabian
Langan , John.
College Writing Skills.
London:
Mc Graw-Hill,
1996.
.