Gaya APA
ZIMMERMANN,Erich W.. (1951).
World Resources and Industries .
New York:
Harper and Brother Publisher.
Gaya Chicago
ZIMMERMANN,Erich W..
World Resources and Industries.
New York:
Harper and Brother Publisher,
1951.
Teks.
Gaya MLA
ZIMMERMANN,Erich W..
World Resources and Industries.
New York:
Harper and Brother Publisher,
1951.
Teks.
Gaya Turabian
ZIMMERMANN,Erich W..
World Resources and Industries.
New York:
Harper and Brother Publisher,
1951.
Teks.