APA (7e ed.) Bronvermelding
Urton, G. (2003). Signs of the Inka Khipu: Binary coding in the Andean knotted-string records. University of Texas Press.
Chicago (17e ed.) Bronvermelding
Urton, Gary. Signs of the Inka Khipu: Binary Coding in the Andean Knotted-string Records. Austin: University of Texas Press, 2003.
MLA (9e ed.) Bronvermelding
Urton, Gary. Signs of the Inka Khipu: Binary Coding in the Andean Knotted-string Records. University of Texas Press, 2003.
Let op: Deze citaties zijn niet altijd 100% accuraat.