Gaya APA
Economics An Introductionary Analysis. (1967).
USA:
McGraw Hill.
Gaya Chicago
Economics An Introductionary Analysis.
.
USA:
McGraw Hill,
1967.
.
Gaya MLA
Economics An Introductionary Analysis.
.
USA:
McGraw Hill,
1967.
.
Gaya Turabian
Economics An Introductionary Analysis.
USA:
McGraw Hill,
1967.
.