Gaya APA
Leslie Roberts, dkk. (1998).
World Resources A Guide To the Global Environment .
New York:
Oxford University Press.
Gaya Chicago
Leslie Roberts, dkk.
World Resources A Guide To the Global Environment.
New York:
Oxford University Press,
1998.
Text.
Gaya MLA
Leslie Roberts, dkk.
World Resources A Guide To the Global Environment.
New York:
Oxford University Press,
1998.
Text.
Gaya Turabian
Leslie Roberts, dkk.
World Resources A Guide To the Global Environment.
New York:
Oxford University Press,
1998.
Print.