Gaya APA
AHRENS, C, D. (2013).
Meteorology Today An Introduction to Weather, Climate, and The Environment Tenth Edition .
canada:
Cenage earning.
Gaya MLA
AHRENS, C., DONALD.
"Meteorology Today An Introduction to Weather, Climate, and The Environment Tenth Edition".
canada:
Cenage earning,
2013.
Buku.