Gaya APA
EART, Mars On. (1999).
National geographic, vol.196, no.1, july 1999 .
:
.
Gaya Chicago
EART, Mars On.
National geographic, vol.196, no.1, july 1999.
:
,
1999.
Text.
Gaya MLA
EART, Mars On.
National geographic, vol.196, no.1, july 1999.
:
,
1999.
Text.
Gaya Turabian
EART, Mars On.
National geographic, vol.196, no.1, july 1999.
:
,
1999.
Print.