Gaya APA
Balmino, G.. (1999).
IUGG year book January 1999 .
Toulouse Cedex:
IUGG.
Gaya Chicago
Balmino, G..
IUGG year book January 1999.
Toulouse Cedex:
IUGG,
1999.
Text.
Gaya MLA
Balmino, G..
IUGG year book January 1999.
Toulouse Cedex:
IUGG,
1999.
Text.
Gaya Turabian
Balmino, G..
IUGG year book January 1999.
Toulouse Cedex:
IUGG,
1999.
Print.