Cita APA (7a ed.)

Puga, D., & Venables, A. J. (1996). The spread of industry: Spatial agglomeration in economic development. [s.n.].

Cita Chicago Style (17a ed.)

Puga, Diego, y Anthony J. Venables. The Spread of Industry: Spatial Agglomeration in Economic Development. [S.l.]: [s.n.], 1996.

Cita MLA (9a ed.)

Puga, Diego, y Anthony J. Venables. The Spread of Industry: Spatial Agglomeration in Economic Development. [s.n.], 1996.