Gaya APA
LEONARD BERNSTEIN, ET AL. (2009).
EARTH SCIENCE (FOURTH ED.).
NEW JERSEY, USA:
PEARSON EDUCATION.
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LEONARD BERNSTEIN, ET AL.
EARTH SCIENCE.
FOURTH ED.
NEW JERSEY, USA:
PEARSON EDUCATION,
2009.
Text.
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LEONARD BERNSTEIN, ET AL.
EARTH SCIENCE.
FOURTH ED.
NEW JERSEY, USA:
PEARSON EDUCATION,
2009.
Text.
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LEONARD BERNSTEIN, ET AL.
EARTH SCIENCE.
FOURTH ED.
NEW JERSEY, USA:
PEARSON EDUCATION,
2009.
Print.