APA (7th ed.) Citation

Gracián, E. (2012). Prime numbers: An unpredictable series. RBA.

Chicago Style (17th ed.) Citation

Gracián, Enrique. Prime Numbers: An Unpredictable Series. London: RBA, 2012.

MLA (9th ed.) Citation

Gracián, Enrique. Prime Numbers: An Unpredictable Series. RBA, 2012.

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