Gaya APA
Joseph, Benny. (2005).
ENVIRONMENTAL STUDIES .
New York:
TATA MCGRAW-HILL.
Gaya Chicago
Joseph, Benny.
ENVIRONMENTAL STUDIES.
New York:
TATA MCGRAW-HILL,
2005.
Teks.
Gaya MLA
Joseph, Benny.
ENVIRONMENTAL STUDIES.
New York:
TATA MCGRAW-HILL,
2005.
Teks.
Gaya Turabian
Joseph, Benny.
ENVIRONMENTAL STUDIES.
New York:
TATA MCGRAW-HILL,
2005.
Teks.