Gaya APA
GORDON, Leland J.. (1950).
Elementary Economics .
New York:
American Book Company.
Gaya Chicago
GORDON, Leland J..
Elementary Economics.
New York:
American Book Company,
1950.
Teks.
Gaya MLA
GORDON, Leland J..
Elementary Economics.
New York:
American Book Company,
1950.
Teks.
Gaya Turabian
GORDON, Leland J..
Elementary Economics.
New York:
American Book Company,
1950.
Teks.