Cita APA (7a ed.)

Espinosa, M. P. (1989). Collusion and pricing systems in spatial markets. Instituto de Economía Pública.

Cita Chicago Style (17a ed.)

Espinosa, María Paz. Collusion and Pricing Systems in Spatial Markets. Bilbao: Instituto de Economía Pública, 1989.

Cita MLA (9a ed.)

Espinosa, María Paz. Collusion and Pricing Systems in Spatial Markets. Instituto de Economía Pública, 1989.