Gw mau tau Jam air India dari Jam air. Jelasin dalam bahasa melayu

Achar, N. “On the Vedic origin of the ancient mathematical astronomy of India.” Journal of Studies on Ancient India, vol 1, 95-108, 1998.

Fleet, J. F., “The ancient Indian water clock.” Journal of the Royal Asiatic Society, 213-230, 1915.

Kumar, Narendra "Science in Ancient India" (2004). ISBN 81-261-2056-8.

Pingree, D. “The Mesopotamian origin of early Indian mathematical astronomy.” Journal of the History of Astronomy, vol. 4, 1-12, 1973.

Pingree, D. “The recovery of early Greek astronomy from India.” Journal for the History of Astronomy, vol 7, 109-123, 1976.