APA (7th ed.) Citation
Hartree, D. R. (1950). Calculating instruments and machines. University press.
Chicago Style (17th ed.) Citation
Hartree, Douglas Rayner. Calculating Instruments and Machines. Cambridge: University press, 1950.
MLA (9th ed.) Citation
Hartree, Douglas Rayner. Calculating Instruments and Machines. University press, 1950.
Warning: These citations may not always be 100% accurate.