Gaya APA
Harper, David. (1986).
ESP For The University .
:
Pergamon Press.
Gaya Chicago
Harper, David.
ESP For The University.
:
Pergamon Press,
1986.
Text.
Gaya MLA
Harper, David.
ESP For The University.
:
Pergamon Press,
1986.
Text.
Gaya Turabian
Harper, David.
ESP For The University.
:
Pergamon Press,
1986.
Print.