Emsley, J. (1989). The elements. Clarendon Press.
Cita Chicago (17th ed.)Emsley, John. The Elements. Oxford: Clarendon Press, 1989.
Cita MLA (9th ed.)Emsley, John. The Elements. Clarendon Press, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.