Gaya APA
Challand, Helen J.. (1982).
Earthquakes .
Chicago:
Childrens Press.
Gaya Chicago
Challand, Helen J..
Earthquakes.
Chicago:
Childrens Press,
1982.
Text.
Gaya MLA
Challand, Helen J..
Earthquakes.
Chicago:
Childrens Press,
1982.
Text.
Gaya Turabian
Challand, Helen J..
Earthquakes.
Chicago:
Childrens Press,
1982.
Print.