Gaya APA
BLACK, John Donald. (1953).
Introduction To Economics For agriculture .
New York:
Macmillan Company.
Gaya Chicago
BLACK, John Donald.
Introduction To Economics For agriculture.
New York:
Macmillan Company,
1953.
Teks.
Gaya MLA
BLACK, John Donald.
Introduction To Economics For agriculture.
New York:
Macmillan Company,
1953.
Teks.
Gaya Turabian
BLACK, John Donald.
Introduction To Economics For agriculture.
New York:
Macmillan Company,
1953.
Teks.