Hartree, D. R. (1953). Calculating instruments and machines. University of Illinois Press.
Cita Chicago Style (17a ed.)Hartree, Douglas R. Calculating Instruments and Machines. Urbana: University of Illinois Press, 1953.
Cita MLA (9a ed.)Hartree, Douglas R. Calculating Instruments and Machines. University of Illinois Press, 1953.
Precaución: Estas citas no son 100% exactas.