Tietueen sitaatit
APA-viiteAakkula, J., & Aakkula, J. J. (1999). Economic value of pro-environmental farming: A critical and decision-making oriented application of the contingent valuation method. Agricultural Economics Research Institute.
Chicago-tyylinen lähdeviittausAakkula, Jyrki, ja Jyrki J. Aakkula. Economic Value of Pro-environmental Farming: A Critical and Decision-making Oriented Application of the Contingent Valuation Method. [Helsinki]: Agricultural Economics Research Institute, 1999.
MLA-viiteAakkula, Jyrki, ja Jyrki J. Aakkula. Economic Value of Pro-environmental Farming: A Critical and Decision-making Oriented Application of the Contingent Valuation Method. Agricultural Economics Research Institute, 1999.
Harvard-tyylinen lähdeviittausAakkula, J. & Aakkula, J. J. 1999. Economic value of pro-environmental farming: A critical and decision-making oriented application of the contingent valuation method. [Helsinki]: Agricultural Economics Research Institute.