APA Style
DOIG, Roberto Gheller. ().
Cusco: the navel of the world .
:
.
Chicago Style
DOIG, Roberto Gheller.
Cusco: the navel of the world.
:
,
.
Text.
MLA Style
DOIG, Roberto Gheller.
Cusco: the navel of the world.
:
,
.
Text.
Turabian Style
DOIG, Roberto Gheller.
Cusco: the navel of the world.
:
,
.
Print.