Coombs, R., Saviotti, P., & Walsh, V. (1987). Economics and technological change. Rowman & Littlefield.
Chicago-čujuhus (17. p.)Coombs, Rod, Paolo Saviotti, juo Vivien Walsh. Economics and Technological Change. Totowa, N.J.: Rowman & Littlefield, 1987.
MLA-čujuhus (9. p.)Coombs, Rod, et al. Economics and Technological Change. Rowman & Littlefield, 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.