APA (7th ed.) Citation

Ascher, M., & Ascher, R. (1997). Mathematics of the Incas: Code of the quipu. Dover Publications.

Chicago Style (17th ed.) Citation

Ascher, Marcia, and Robert Ascher. Mathematics of the Incas: Code of the Quipu. Mineola, N.Y: Dover Publications, 1997.

MLA (8th ed.) Citation

Ascher, Marcia, and Robert Ascher. Mathematics of the Incas: Code of the Quipu. Dover Publications, 1997.

Warning: These citations may not always be 100% accurate.