Coombs, R., Saviotti, P., & Walsh, V. (1987). Economics and technological change. Rowman & Littlefield.
Lua i Stíl Chicago (17ú heag.)Coombs, Rod, Paolo Saviotti, agus Vivien Walsh. Economics and Technological Change. Totowa, N.J.: Rowman & Littlefield, 1987.
Lua MLA (9ú heag.)Coombs, Rod, et al. Economics and Technological Change. Rowman & Littlefield, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.