Denning, P. J., Dennis, J. B., & Qualitz, J. E. (1978). Machines, Languages and Computation. Prentice Hall Professional Technical Reference. doi: 10.5555/578597Tagshttps://dl.acm.org/doi/book/10.5555/578597https://archive.org/details/machineslanguage00denn/page/n7/mode/2up