Cita APA (7a ed.)

Rauch, J. E. (1993). Productivity gains from geographic concentration of human capital: Evidence from the cities. [s.n.].

Cita Chicago Style (17a ed.)

Rauch, James E. Productivity Gains from Geographic Concentration of Human Capital: Evidence from the Cities. [S.l.]: [s.n.], 1993.

Cita MLA (9a ed.)

Rauch, James E. Productivity Gains from Geographic Concentration of Human Capital: Evidence from the Cities. [s.n.], 1993.