Gaya APA
PETERSEN,W.E. (1953).
Dairy Farming .
New York:
Lippincott Compasny.
Gaya Chicago
PETERSEN,W.E.
Dairy Farming.
New York:
Lippincott Compasny,
1953.
Teks.
Gaya MLA
PETERSEN,W.E.
Dairy Farming.
New York:
Lippincott Compasny,
1953.
Teks.
Gaya Turabian
PETERSEN,W.E.
Dairy Farming.
New York:
Lippincott Compasny,
1953.
Teks.