Hay, D. (1979). Industrial economics: Theory & evidence. Oxford Uni Press.
Lua i Stíl Chicago (17ú heag.)Hay, Donald. Industrial Economics: Theory & Evidence. Oxford: Oxford Uni Press, 1979.
Lua MLA (9ú heag.)Hay, Donald. Industrial Economics: Theory & Evidence. Oxford Uni Press, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.