Gaya APA
Graves, W. (1992).
November 1992: National Geographic VOL. 182, NO.5 (November 1992).
Washington D.C:
National Geographic.
Gaya MLA
Graves, William.
"November 1992: National Geographic VOL. 182, NO.5".
November 1992
Washington D.C:
National Geographic,
1992.
Text.