Mansfield, E. (1968). Industrial research and technological innovation: An econometric analysis ([1st ed.].). Norton.
Lua i Stíl Chicago (17ú heag.)Mansfield, Edwin. Industrial Research and Technological Innovation: An Econometric Analysis. [1st ed.]. New York: Norton, 1968.
Lua MLA (9ú heag.)Mansfield, Edwin. Industrial Research and Technological Innovation: An Econometric Analysis. [1st ed.]. Norton, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.