Maxwell, James Clerk (1865). "A dynamical theory of the electromagnetic field" (PDF). Philosophical Transactions of the Royal Society of London 155: ms. 499. doi:10.1098/rstl.1865.0008.(Rencana ini menemani suatu perbentangan 8 Disember 1864 oleh Maxwell kepada Persatuan Diraja.)
Griffiths, David J. (1999). Introduction to electrodynamics, Edisi Ketiga, ed. Prentice Hall, ms. 559–562.
Gabriela, Davina (2009). Manuskrip tidak terterbit. Epistemology: Foundations for Clinical Theories, Endnote 5; ms. 24.
