Gaya APA
English for the secretary/. (1982).
Amerika Serikat:
Mc Grow -Hill.
Gaya Chicago
English for the secretary/.
.
Amerika Serikat:
Mc Grow -Hill,
1982.
Text.
Gaya MLA
English for the secretary/.
.
Amerika Serikat:
Mc Grow -Hill,
1982.
Text.
Gaya Turabian
English for the secretary/.
Amerika Serikat:
Mc Grow -Hill,
1982.
Print.