Gaya APA
Introductory Economy. (-).
Amerika:
Harper & Row Publisher.
Gaya Chicago
Introductory Economy.
.
Amerika:
Harper & Row Publisher,
-.
.
Gaya MLA
Introductory Economy.
.
Amerika:
Harper & Row Publisher,
-.
.
Gaya Turabian
Introductory Economy.
Amerika:
Harper & Row Publisher,
-.
.