Columbia subject headings:
Harvard subject headings:
Incas--Peru--Antiquities--Bibliography.
Machu Picchu Site (Peru)--Bibliography.
Peru--Antiquities--Bibliography.
Santuario Histórico de Machu Picchu (Peru)--Bibliography.
Princeton subject headings:
Machu Picchu Site (Peru)--Bibliography.
Santuario Histórico de Machu Picchu (Peru)--Bibliography.