Cầu dây Inca (Vietnamese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Cầu dây Inca" in Vietnamese language version.

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archive.org

Incas: lords of gold and glory. New York: Time-Life Books. 1992. tr. 98. ISBN 0-8094-9870-7.
"Each bridge is usually kept up by the municipality of the nearest village; and as it requires renewal every two or three years...", page 545 "Peru: Incidents of Travel and Exploration in the Land of the Incas", 1877, E. G. Squier
Incas: lords of gold and glory. New York: Time-Life Books. 1992. tr. 68. ISBN 0-8094-9870-7.