Cita APA (7a ed.)

Levin, R. C. (1987). Appropriating the returns from industrial research and development. [s.n.].

Cita Chicago Style (17a ed.)

Levin, Richard C. Appropriating the Returns from Industrial Research and Development. [S.l.]: [s.n.], 1987.

Cita MLA (9a ed.)

Levin, Richard C. Appropriating the Returns from Industrial Research and Development. [s.n.], 1987.