APA Style
National geographic: inca sacrifice vol.196 no.5 november 1999. (1999).
Washington, D.C.:
the National Geographic Society.
Chicago Style
National geographic: inca sacrifice vol.196 no.5 november 1999.
november 1999.
Washington, D.C.:
the National Geographic Society,
1999.
Text.
MLA Style
National geographic: inca sacrifice vol.196 no.5 november 1999.
november 1999.
Washington, D.C.:
the National Geographic Society,
1999.
Text.
Turabian Style
National geographic: inca sacrifice vol.196 no.5 november 1999.
Washington, D.C.:
the National Geographic Society,
1999.
Print.