McKenzie, R. B., & Tullock, G. (2012). The New World of Economics: A Remake of a Classic for New Generations of Economics Students (6th ed. 2012.). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-27364-3

McKenzie, Richard B., and Gordon Tullock. The New World of Economics: A Remake of a Classic for New Generations of Economics Students. 6th ed. 2012. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. https://doi.org/10.1007/978-3-642-27364-3.

McKenzie, Richard B., and Gordon Tullock. The New World of Economics: A Remake of a Classic for New Generations of Economics Students. 6th ed. 2012. Springer Berlin Heidelberg, 2012. https://doi.org/10.1007/978-3-642-27364-3.