Sprague, M. (2012). Paradox: The Nine Greatest Enigmas in Science.
Cita Chicago (17th ed.)Sprague, MR. Paradox: The Nine Greatest Enigmas in Science. 2012.
Cita MLA (9th ed.)Sprague, MR. Paradox: The Nine Greatest Enigmas in Science. 2012.
Atenció: Aquestes cites poden no estar 100% correctes.