Cita APA (7a ed.)

Urton, G. (2003). Signs of the Inka Khipu: Binary Coding in the Andean Knotted-String Records. University of Texas Press.

Cita Chicago Style (17a ed.)

Urton, Gary. Signs of the Inka Khipu: Binary Coding in the Andean Knotted-String Records. Austin: University of Texas Press, 2003.

Cita MLA (8a ed.)

Urton, Gary. Signs of the Inka Khipu: Binary Coding in the Andean Knotted-String Records. University of Texas Press, 2003.