Παραπομπή APA

Blackman, A., Alpízar, F., Carlsson, F., & Rivera Planter, M. (2015). A Contingent Valuation Approach to Estimating Regulatory Costs: Mexico’s Day without Driving Program.

Παραπομπή Chicago Style

Blackman, Allen, Francisco Alpízar, Fredrik Carlsson, και Marisol Rivera Planter. A Contingent Valuation Approach to Estimating Regulatory Costs: Mexico’s Day Without Driving Program. 2015.

Παραπομπή MLA

Blackman, Allen, Francisco Alpízar, Fredrik Carlsson, και Marisol Rivera Planter. A Contingent Valuation Approach to Estimating Regulatory Costs: Mexico’s Day Without Driving Program. 2015.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.