Cita APA (7th ed.)
Urton, G. (2003). Signs of the Inka Khipu: Binary coding in the Andean knotted-string records. University of Texas Press.
Cita Chicago (17th ed.)
Urton, Gary. Signs of the Inka Khipu: Binary Coding in the Andean Knotted-string Records. Austin: University of Texas Press, 2003.
Cita MLA (9th ed.)
Urton, Gary. Signs of the Inka Khipu: Binary Coding in the Andean Knotted-string Records. University of Texas Press, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.