Gaya APA
National geographic vol 190, no 5 november 1996. ().
:
.
Gaya Chicago
National geographic vol 190, no 5 november 1996.
.
:
,
.
Text.
Gaya MLA
National geographic vol 190, no 5 november 1996.
.
:
,
.
Text.
Gaya Turabian
National geographic vol 190, no 5 november 1996.
:
,
.
Print.