Lipsey, R. G., Langley, P. C., & Mahoney, D. M. (1981). Positive economics for Australian students. Weidenfeld and Nicolson.
Citazione stile Chigago Style (17a edizione)Lipsey, Richard G., Paul C. Langley, e Dennis M. Mahoney. Positive Economics for Australian Students. London: Weidenfeld and Nicolson, 1981.
Citatione MLA (9a ed.)Lipsey, Richard G., et al. Positive Economics for Australian Students. Weidenfeld and Nicolson, 1981.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.