APA Citation

Ifrah, G. (2005). The Universal history of numbers I: The worlds first number system (1st Ed.). New Delhi: Penguin books india.

Chicago Style Citation

Ifrah, Georges. The Universal History of Numbers I: The Worlds First Number System. 1st Ed. New Delhi: Penguin books india, 2005.

MLA Citation

Ifrah, Georges. The Universal History of Numbers I: The Worlds First Number System. 1st Ed. New Delhi: Penguin books india, 2005.

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