Cita APA

Olsson, B. T. (2001). Multi-nation contingent valuation: A comparative study of ranking and values of enviromental problems. Sweden: Göteborg University.

Citación estilo Chicago

Olsson, Björn T. Multi-nation Contingent Valuation: A Comparative Study of Ranking and Values of Enviromental Problems. Sweden: Göteborg University, 2001.

Cita MLA

Olsson, Björn T. Multi-nation Contingent Valuation: A Comparative Study of Ranking and Values of Enviromental Problems. Sweden: Göteborg University, 2001.