Mansfield, E. (1968). Industrial research and technological innovation: An econometric analysis ([1st ed.].). Norton.
Chicago-čujuhus (17. p.)Mansfield, Edwin. Industrial Research and Technological Innovation: An Econometric Analysis. [1st ed.]. New York: Norton, 1968.
MLA-čujuhus (9. p.)Mansfield, Edwin. Industrial Research and Technological Innovation: An Econometric Analysis. [1st ed.]. Norton, 1968.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.