Gaya APA
Contemporary Economic Issues. (1969).
Illinois:
Irwin.
Gaya Chicago
Contemporary Economic Issues.
Cet.1.
Illinois:
Irwin,
1969.
.
Gaya MLA
Contemporary Economic Issues.
Cet.1.
Illinois:
Irwin,
1969.
.
Gaya Turabian
Contemporary Economic Issues.
Illinois:
Irwin,
1969.
.